# Twilio in December 2021: incidents, uptime and changes

> Twilio in December 2021: 147 incidents on its status page (3 major or critical), 95.04% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Twilio’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/twilio/2021/12
Last updated: 2022-01-01T06:52:00Z

- Incidents posted: 147 (major/critical: 3) · Maintenance: 106
- By vendor impact label: major 3, minor 131, none 13
- Uptime (vendor-reported): 95.04% free of major/critical incidents, 15.94% free of any incident; outage time 36 h 52 min, incident time 26.1 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [November 2021](https://rewindex.com/company/twilio/2021/11.md) · Next: [January 2022](https://rewindex.com/company/twilio/2022/01.md) · [All months](https://rewindex.com/company/twilio/reports.md) · [Twilio](https://rewindex.com/company/twilio.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## Major and critical incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Issue with Multiple Products Due to Degradation in our US East Data Center](https://rewindex.com/company/twilio/incidents/rgz6jbw51x4v.md) | major | 2021-12-07 15:57 UTC | 2021-12-08 05:39 UTC | 14 h | resolved |
| [Data Center Outage Impacting Multiple Services](https://rewindex.com/company/twilio/incidents/2hjyv5p9wh3k.md) | major | 2021-12-22 12:17 UTC | 2021-12-23 05:38 UTC | 17 h | resolved |
| [MMS Delivery Delays With U.S Twilio Longcodes](https://rewindex.com/company/twilio/incidents/n0hyfwc8vxz0.md) | major | 2021-12-25 16:03 UTC | 2021-12-25 21:52 UTC | 5.8 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [SMS Delivery Delays to Nigeria Airtel](https://rewindex.com/company/twilio/incidents/3rkz90prwz9m.md) | minor | 2021-12-01 12:46 UTC | 2021-12-01 19:06 UTC | 6.3 h | resolved |
| [Small Subset of Twilio Customers Unable to Access Verify](https://rewindex.com/company/twilio/incidents/92q4vx6t3g33.md) | none | 2021-12-01 14:49 UTC | 2021-12-01 14:54 UTC | 5 min | resolved |
| [SMS Delivery Report Delays to US Networks from a Small Subset of Twilio US Short Codes](https://rewindex.com/company/twilio/incidents/465vbsvn6qhp.md) | minor | 2021-12-01 15:23 UTC | 2021-12-01 17:52 UTC | 2.5 h | resolved |
| [SMS and MMS Latency for a Subset of Twilio Customers](https://rewindex.com/company/twilio/incidents/qrrkgds9xrm0.md) | minor | 2021-12-01 17:35 UTC | 2021-12-01 18:38 UTC | 1.1 h | resolved |
| [SMS Delivery Delays To LifeCell Network In Ukraine](https://rewindex.com/company/twilio/incidents/3pqp2q49zryw.md) | minor | 2021-12-02 06:49 UTC | 2021-12-02 10:31 UTC | 3.7 h | resolved |
| [Inbound Call Failures to Indonesia Landline Numbers](https://rewindex.com/company/twilio/incidents/zrz5mhmr8wtr.md) | minor | 2021-12-02 09:03 UTC | 2021-12-02 12:54 UTC | 3.9 h | resolved |
| [SMS Delivery Delays to Airtel Network in Nigeria](https://rewindex.com/company/twilio/incidents/y42txyzz04bl.md) | minor | 2021-12-02 12:16 UTC | 2021-12-02 15:26 UTC | 3.2 h | resolved |
| [SMS Delivery Delays to Switzerland Salt Mobile Network](https://rewindex.com/company/twilio/incidents/p8rkbwccwttn.md) | minor | 2021-12-02 16:33 UTC | 2021-12-02 19:14 UTC | 2.7 h | resolved |
| [SMS Delivery Delays to Algar Network in Brazil](https://rewindex.com/company/twilio/incidents/z6zghlhj7tbg.md) | minor | 2021-12-02 17:14 UTC | 2021-12-02 19:57 UTC | 2.7 h | resolved |
| [Issue Adding Addresses in Twilio Console](https://rewindex.com/company/twilio/incidents/cmppy9187qtb.md) | minor | 2021-12-02 18:24 UTC | 2021-12-02 22:42 UTC | 4.3 h | resolved |
| [SMS Delivery Delays to Vodafone Network in Egypt](https://rewindex.com/company/twilio/incidents/7rwh9hczvxm8.md) | minor | 2021-12-02 18:45 UTC | 2021-12-02 19:45 UTC | 1.0 h | resolved |
| [SMS Delivery Delays to Vodafone Network in Egypt](https://rewindex.com/company/twilio/incidents/zwybvh9m3zpw.md) | minor | 2021-12-02 19:59 UTC | 2021-12-03 08:28 UTC | 12 h | resolved |
| [SMS Delivery Delays to Asia Cell Network in Iraq](https://rewindex.com/company/twilio/incidents/yjpv7r86zqpr.md) | minor | 2021-12-03 06:05 UTC | 2021-12-03 14:49 UTC | 8.7 h | resolved |
| [SMS Delivery Degradation from Twilio US Longcodes to Verizon Network and Shortcode to US Verizon and T-Mobile Network](https://rewindex.com/company/twilio/incidents/81bt1ljhj7r0.md) | none | 2021-12-03 08:45 UTC | 2021-12-03 08:45 UTC | 0 min | resolved |
| [SMS Delivery Delay to Verizon Network in US Over a Subset of Short Code](https://rewindex.com/company/twilio/incidents/ds3bry4jh0ph.md) | minor | 2021-12-03 12:42 UTC | 2021-12-03 15:22 UTC | 2.7 h | resolved |
| [SMS Delivery Delays to Orange Network in Mali](https://rewindex.com/company/twilio/incidents/wcdybmd9sssw.md) | minor | 2021-12-03 21:43 UTC | 2021-12-04 02:27 UTC | 4.7 h | resolved |
| [Automated Alert: Minimal Customer Impact](https://rewindex.com/company/twilio/incidents/n71w65dz3by1.md) | minor | 2021-12-04 19:15 UTC | 2021-12-04 21:05 UTC | 1.8 h | resolved |
| [SMS Delivery Delay To Al-Madar Libya](https://rewindex.com/company/twilio/incidents/qfbz42tthggc.md) | minor | 2021-12-05 02:19 UTC | 2021-12-05 17:01 UTC | 15 h | resolved |
| [SMS Delivery Delay To Airtel Gabon](https://rewindex.com/company/twilio/incidents/51byqbp1r19z.md) | minor | 2021-12-05 17:07 UTC | 2021-12-06 09:04 UTC | 16 h | resolved |
| [SMS Delivery Delays to Vinaphone Network in Vietnam](https://rewindex.com/company/twilio/incidents/n9wyxcg5pg14.md) | minor | 2021-12-06 05:55 UTC | 2021-12-06 12:37 UTC | 6.7 h | resolved |
| [Issue with Upgrading Twilio Accounts](https://rewindex.com/company/twilio/incidents/2zp6nk031t85.md) | minor | 2021-12-06 16:44 UTC | 2021-12-06 18:30 UTC | 1.8 h | resolved |
| [SMS Delivery Delays to Mali Orange](https://rewindex.com/company/twilio/incidents/nhgt2gy6b7x0.md) | minor | 2021-12-06 18:20 UTC | 2021-12-07 10:37 UTC | 16 h | resolved |
| [Flex Insights Data Delays](https://rewindex.com/company/twilio/incidents/h6wwxbvmbrhq.md) | minor | 2021-12-06 20:16 UTC | 2021-12-06 21:49 UTC | 1.6 h | resolved |
| [SMS Delivery Delays To Multiple US Networks Causing Delays in Authy 2FA and Verify Retry Attempts](https://rewindex.com/company/twilio/incidents/klqd16vk856s.md) | minor | 2021-12-07 00:09 UTC | 2021-12-07 07:27 UTC | 7.3 h | resolved |
| [Flex Insights Data Delays](https://rewindex.com/company/twilio/incidents/2gfsmj1j5n7n.md) | minor | 2021-12-07 10:21 UTC | 2021-12-07 11:53 UTC | 1.5 h | resolved |
| [Delivery Report Delays When Sending to the United Kingdom (O2, Vodafone, H3G networks)](https://rewindex.com/company/twilio/incidents/x4gcfyddz0m9.md) | minor | 2021-12-07 10:43 UTC | 2021-12-07 19:30 UTC | 8.8 h | resolved |
| [Automated Alert: No Customer Impact](https://rewindex.com/company/twilio/incidents/mh9hrnlcspk7.md) | none | 2021-12-07 15:22 UTC | 2021-12-07 15:39 UTC | 17 min | resolved |
| [Issue with Multiple Products Due to Degradation in our US East Data Center](https://rewindex.com/company/twilio/incidents/rgz6jbw51x4v.md) | major | 2021-12-07 15:57 UTC | 2021-12-08 05:39 UTC | 14 h | resolved |
| [On Call Engineers are Investigating Issue With Twilio Live](https://rewindex.com/company/twilio/incidents/d97b3kdkd9b8.md) | none | 2021-12-07 15:59 UTC | 2021-12-07 16:22 UTC | 23 min | resolved |
| [Intermittent Inbound SMS Delivery Delays or Failures from Vodafone Handsets to Twilio UK Mobile Numbers](https://rewindex.com/company/twilio/incidents/ryzzz9qgtq33.md) | minor | 2021-12-07 16:36 UTC | 2021-12-10 15:36 UTC | 3 d | resolved |
| [On Call Engineers are Investigating 500 Errors from Studio's Fetch Step Context and Fetch Execution](https://rewindex.com/company/twilio/incidents/jdjnkxzc33hg.md) | none | 2021-12-07 22:03 UTC | 2021-12-07 22:27 UTC | 24 min | resolved |
| [Automated Alert: No Customer Impact](https://rewindex.com/company/twilio/incidents/sm5j3s251fhj.md) | none | 2021-12-08 09:43 UTC | 2021-12-08 09:47 UTC | 4 min | resolved |
| [Inbound SMS Delays From United Kingdom of Great Britain and Northern Ireland](https://rewindex.com/company/twilio/incidents/9s82cc7mzqgl.md) | none | 2021-12-09 08:49 UTC | 2021-12-09 08:49 UTC | 0 min | resolved |
| [SMS Delivery Delays to Airtel Nigeria](https://rewindex.com/company/twilio/incidents/x6xlnp6sq63v.md) | minor | 2021-12-09 14:47 UTC | 2021-12-09 19:32 UTC | 4.8 h | resolved |
| [SMS Delivery Delays to China Mobile](https://rewindex.com/company/twilio/incidents/2pj3kkjqpb2j.md) | minor | 2021-12-09 14:52 UTC | 2021-12-09 19:34 UTC | 4.7 h | resolved |
| [Programmable Wireless Billing Issue](https://rewindex.com/company/twilio/incidents/kvgqwmn2sgj4.md) | minor | 2021-12-09 15:24 UTC | 2021-12-09 15:29 UTC | 5 min | resolved |
| [MMS Delivery Delays Over Subset of Shortcodes to Multiple US Networks](https://rewindex.com/company/twilio/incidents/7rx0nvpjg2y2.md) | minor | 2021-12-09 16:57 UTC | 2021-12-11 01:21 UTC | 32 h | resolved |
| [SMS Delivery Delays to Malitel Network in Mali](https://rewindex.com/company/twilio/incidents/l2f53c1wxhd9.md) | minor | 2021-12-09 20:55 UTC | 2021-12-11 01:37 UTC | 29 h | resolved |
| [SMS Delivery Delays to Fibernetics Network in Canada](https://rewindex.com/company/twilio/incidents/xwbgvbwm6d1g.md) | minor | 2021-12-09 22:23 UTC | 2021-12-10 04:42 UTC | 6.3 h | resolved |
| [SMS Delivery Delays to US Cellular in the US from Toll-free Numbers](https://rewindex.com/company/twilio/incidents/gpm7wp1dd98h.md) | minor | 2021-12-09 22:31 UTC | 2021-12-10 02:16 UTC | 3.8 h | resolved |
| [SMS Delivery Delays to All Networks in Canada From Toll-Free Numbers](https://rewindex.com/company/twilio/incidents/bfk7jvp5kq5h.md) | minor | 2021-12-10 04:53 UTC | 2021-12-10 09:35 UTC | 4.7 h | resolved |
| [SMS Delivery Delays to Vodafone Egypt](https://rewindex.com/company/twilio/incidents/19c0np444mfk.md) | minor | 2021-12-10 14:28 UTC | 2021-12-11 01:28 UTC | 11 h | resolved |
| [Elevated 5xx Responses and Latency on Studio Event Handling](https://rewindex.com/company/twilio/incidents/5tdqc0w44b7h.md) | minor | 2021-12-10 20:30 UTC | 2021-12-10 21:22 UTC | 52 min | resolved |
| [Latency and Timeout Errors with Twilio Rest API Impacting Multiple Products](https://rewindex.com/company/twilio/incidents/ztxfwntyhgqd.md) | minor | 2021-12-10 20:39 UTC | 2021-12-10 22:19 UTC | 1.7 h | resolved |
| [Elevated HTTP 400 Errors for Programmable Messaging](https://rewindex.com/company/twilio/incidents/b03p42zr7460.md) | minor | 2021-12-10 23:07 UTC | 2021-12-11 01:16 UTC | 2.1 h | resolved |
| [SMS Delivery Delays To Airtel Network In India](https://rewindex.com/company/twilio/incidents/8l6d3rxw8yms.md) | minor | 2021-12-11 04:53 UTC | 2021-12-11 17:11 UTC | 12 h | resolved |
| [Calls With ACCSID as TWIML Application Failing](https://rewindex.com/company/twilio/incidents/l6cdp2nb9lmx.md) | none | 2021-12-11 17:35 UTC | 2021-12-11 18:27 UTC | 52 min | resolved |
| [SMS Delivery Delays to Viva Kuwait](https://rewindex.com/company/twilio/incidents/lhzpj1rk1mn8.md) | minor | 2021-12-11 18:10 UTC | 2021-12-12 01:40 UTC | 7.5 h | resolved |
| [SMS Delivery Delays when Sending Messages to Vodafone Network In Egypt](https://rewindex.com/company/twilio/incidents/mwt2fwpwn7sg.md) | minor | 2021-12-12 15:51 UTC | 2021-12-12 20:50 UTC | 5.0 h | resolved |
| [SMS Delivery Delays to Orange Network Mali](https://rewindex.com/company/twilio/incidents/r4jz2hvbkrlx.md) | minor | 2021-12-12 21:24 UTC | 2021-12-13 02:13 UTC | 4.8 h | resolved |
| [SMS Delivery Delays to XL Axiata Indonesia](https://rewindex.com/company/twilio/incidents/b73vdddt86kn.md) | minor | 2021-12-13 07:35 UTC | 2021-12-13 10:14 UTC | 2.6 h | resolved |
| [Voice Quality Degradation with Inbound and Outbound calls to Taiwan Phone numbers](https://rewindex.com/company/twilio/incidents/shw79tnmrq68.md) | minor | 2021-12-13 11:42 UTC | 2021-12-13 14:11 UTC | 2.5 h | resolved |
| [Inbound Call Failures to a Subset of Taiwan Phone Numbers](https://rewindex.com/company/twilio/incidents/0nmj0m17r1bp.md) | minor | 2021-12-13 15:49 UTC | 2021-12-14 10:12 UTC | 18 h | resolved |
| [Delays in SMS Delivery to Jamaica Digicel Network](https://rewindex.com/company/twilio/incidents/zw8c6jxyjfcj.md) | minor | 2021-12-13 17:26 UTC | 2021-12-13 20:01 UTC | 2.6 h | resolved |
| [Delay in SMS delivery to Multiple Networks in Mexico](https://rewindex.com/company/twilio/incidents/2wp5gs3hg59s.md) | minor | 2021-12-13 22:33 UTC | 2021-12-14 02:09 UTC | 3.6 h | resolved |
| [Call Failures to a Subset of Twilio Numbers in Germany](https://rewindex.com/company/twilio/incidents/0n6f3dzymy1y.md) | minor | 2021-12-14 00:24 UTC | 2021-12-14 06:46 UTC | 6.4 h | resolved |
| [On Call Engineers are Investigating Degradation of Verify SMS in Multiple Countries](https://rewindex.com/company/twilio/incidents/2yhrgg03018z.md) | none | 2021-12-14 07:10 UTC | 2021-12-14 08:01 UTC | 51 min | resolved |
| [SMS Delivery Delays with Programmable Messaging and Verify](https://rewindex.com/company/twilio/incidents/y7tykpgdsb3c.md) | minor | 2021-12-14 07:22 UTC | 2021-12-14 08:58 UTC | 1.6 h | resolved |
| [SMS Delivery Delays to Orange Network in Cameroon](https://rewindex.com/company/twilio/incidents/5p3z6fj8vwzk.md) | minor | 2021-12-14 14:17 UTC | 2021-12-15 14:57 UTC | 25 h | resolved |
| [Automated Alert: Minimal Customer Impact](https://rewindex.com/company/twilio/incidents/dnh71y8xc1xl.md) | minor | 2021-12-14 14:50 UTC | 2021-12-14 14:54 UTC | 4 min | resolved |
| [SMS Delivery Delays to Jamaica Digicel Network](https://rewindex.com/company/twilio/incidents/f7y5cmq5z3s4.md) | minor | 2021-12-14 15:03 UTC | 2021-12-14 20:02 UTC | 5.0 h | resolved |
| [Our Engineers are Investigating an Issue with TaskRouter](https://rewindex.com/company/twilio/incidents/1xf5yd2qz6k1.md) | minor | 2021-12-15 05:41 UTC | 2021-12-15 07:10 UTC | 1.5 h | resolved |
| [SMS Delivery Delays to Orange Network in France](https://rewindex.com/company/twilio/incidents/mxrjjhgz221f.md) | minor | 2021-12-15 08:20 UTC | 2021-12-15 10:56 UTC | 2.6 h | resolved |
| [Automated Alert: No Customer Impact](https://rewindex.com/company/twilio/incidents/8g22dr5yg33s.md) | minor | 2021-12-15 15:48 UTC | 2021-12-15 16:01 UTC | 13 min | resolved |
| [SMS Delivery Degradation From Twilio Toll-Free Numbers to US Carriers](https://rewindex.com/company/twilio/incidents/tjn9sqv5b9l6.md) | minor | 2021-12-15 16:02 UTC | 2021-12-15 19:02 UTC | 3.0 h | resolved |
| [Voice Call Quality Degraded](https://rewindex.com/company/twilio/incidents/87w5m7slql6f.md) | none | 2021-12-15 16:46 UTC | 2021-12-15 16:46 UTC | 0 min | resolved |
| [SMS Delivery Delays & Failures to Tanzania Airtel Network](https://rewindex.com/company/twilio/incidents/1cjpzqgx4ryw.md) | minor | 2021-12-15 19:11 UTC | 2021-12-16 01:44 UTC | 6.5 h | resolved |
| [Super Sim Clients May Experience Delays When Connecting Their Devices](https://rewindex.com/company/twilio/incidents/k4501qtmq6gy.md) | minor | 2021-12-15 21:37 UTC | 2021-12-16 02:04 UTC | 4.5 h | resolved |
| [SMS Delivery Report Delays When Sending To Multiple Networks In US](https://rewindex.com/company/twilio/incidents/cskgf547yv2d.md) | minor | 2021-12-16 04:33 UTC | 2021-12-16 10:54 UTC | 6.3 h | resolved |
| [SMS Delivery Delays To Vodafone Network In Egypt](https://rewindex.com/company/twilio/incidents/xnc7rzkrhznh.md) | minor | 2021-12-16 07:06 UTC | 2021-12-16 14:42 UTC | 7.6 h | resolved |
| [SMS Delivery Delays to Fibernotics Network in Canada](https://rewindex.com/company/twilio/incidents/4pgltvhb9mtw.md) | minor | 2021-12-16 08:29 UTC | 2021-12-16 10:58 UTC | 2.5 h | resolved |
| [SMS Delivery Delays to Orange Network Cameroon](https://rewindex.com/company/twilio/incidents/k09d9kvhnxf7.md) | none | 2021-12-16 14:17 UTC | 2021-12-16 14:17 UTC | 0 min | resolved |
| [SMS Delivery Delays to Somalia Telesom](https://rewindex.com/company/twilio/incidents/cqhp9vxy3w6y.md) | minor | 2021-12-16 14:17 UTC | 2021-12-16 19:09 UTC | 4.9 h | resolved |
| [SMS Delivery Delays to Orange Network Congo](https://rewindex.com/company/twilio/incidents/dxnvw84svlnz.md) | minor | 2021-12-16 20:54 UTC | 2021-12-17 10:36 UTC | 14 h | resolved |
| [SMS Delivery Delays to Claro Colombia](https://rewindex.com/company/twilio/incidents/zx4zvdk1kcyy.md) | minor | 2021-12-16 21:28 UTC | 2021-12-17 00:20 UTC | 2.9 h | resolved |
| [SMS Delivery Delays With Programmable Messaging](https://rewindex.com/company/twilio/incidents/dc1tk1cclzt4.md) | minor | 2021-12-17 06:02 UTC | 2021-12-17 07:23 UTC | 1.4 h | resolved |
| [Inbound MMS Delivery Delays - Mobile Originated](https://rewindex.com/company/twilio/incidents/mzz8pykfnvzd.md) | minor | 2021-12-17 06:42 UTC | 2021-12-17 16:49 UTC | 10 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/n4d6szjqy7jp.md) | minor | 2021-12-17 15:21 UTC | 2021-12-17 15:40 UTC | 19 min | resolved |
| [Latency and Timeout Errors with Twilio Rest API Impacting Multiple Products](https://rewindex.com/company/twilio/incidents/jtksqkz8fb5f.md) | minor | 2021-12-17 15:35 UTC | 2021-12-17 17:12 UTC | 1.6 h | resolved |
| [SMS Delivery Delays to Telcel and AT&T Networks in Mexico](https://rewindex.com/company/twilio/incidents/bpqh290hlvxm.md) | minor | 2021-12-17 17:54 UTC | 2021-12-18 02:38 UTC | 8.7 h | resolved |
| [SMS Delivery Delays To GrameenPhone Network In Bangladesh](https://rewindex.com/company/twilio/incidents/h487l9y6p9bl.md) | minor | 2021-12-18 14:27 UTC | 2021-12-18 19:24 UTC | 5.0 h | resolved |
| [SMS Delivery Delays and Failures to Safaricom Network in Kenya](https://rewindex.com/company/twilio/incidents/2827rk93h36c.md) | minor | 2021-12-18 18:30 UTC | 2021-12-18 23:26 UTC | 4.9 h | resolved |
| [SMS Delivery Delays to Vodacom Network in Tanzania](https://rewindex.com/company/twilio/incidents/3q2v83vd7fxb.md) | minor | 2021-12-18 18:42 UTC | 2021-12-18 23:34 UTC | 4.9 h | resolved |
| [SMS Delivery Delays to Orange Network in Congo](https://rewindex.com/company/twilio/incidents/wz9r2pd0srs8.md) | minor | 2021-12-18 21:01 UTC | 2021-12-19 03:55 UTC | 6.9 h | resolved |
| [SMS Delivery Receipts Delay to Verizon and Small US Carriers From 10DLC Longcodes.](https://rewindex.com/company/twilio/incidents/y6jp5rqx17ry.md) | minor | 2021-12-18 23:20 UTC | 2021-12-19 04:31 UTC | 5.2 h | resolved |
| [SMS Delivery Delays To Safaricom Network In Kenya](https://rewindex.com/company/twilio/incidents/lj53sbsh288n.md) | minor | 2021-12-19 09:37 UTC | 2021-12-19 17:50 UTC | 8.2 h | resolved |
| [SMS Delivery Delays To TIGO Network In Colombia](https://rewindex.com/company/twilio/incidents/6jcwr7ycr5wx.md) | minor | 2021-12-19 14:40 UTC | 2021-12-19 19:30 UTC | 4.8 h | resolved |
| [SMS Delivery Delays To Orange Network In Niger](https://rewindex.com/company/twilio/incidents/zzjynjrqntrh.md) | minor | 2021-12-19 14:56 UTC | 2021-12-19 17:59 UTC | 3.0 h | resolved |
| [SMS Delivery Delays to Smart Network In Philippines](https://rewindex.com/company/twilio/incidents/c9ypmn7tph8d.md) | minor | 2021-12-19 15:59 UTC | 2021-12-19 19:34 UTC | 3.6 h | resolved |
| [Delivery Receipts Delay to Verizon USA Using Subset of 10DLC Longcodes.](https://rewindex.com/company/twilio/incidents/x9qptyk2s7br.md) | minor | 2021-12-19 22:21 UTC | 2021-12-20 01:34 UTC | 3.2 h | resolved |
| [SMS Delivery Delay to Multiple USA Networks Using Subset of Shortcodes](https://rewindex.com/company/twilio/incidents/whs5hdtm9kr4.md) | minor | 2021-12-20 04:52 UTC | 2021-12-20 07:30 UTC | 2.6 h | resolved |
| [SMS Delivery Failures on Chile Entel](https://rewindex.com/company/twilio/incidents/mkz6k375vmnm.md) | minor | 2021-12-20 11:49 UTC | 2021-12-20 13:10 UTC | 1.4 h | resolved |
| [MMS Delivery Delay to USA Networks for a Subset of Short Codes](https://rewindex.com/company/twilio/incidents/th0mg7yr28l9.md) | minor | 2021-12-20 18:09 UTC | 2021-12-21 07:20 UTC | 13 h | resolved |
| [Outbound SMS Delivery Delays to Glo Mobile Network in Nigeria](https://rewindex.com/company/twilio/incidents/7lxpd1yw52v2.md) | minor | 2021-12-20 18:35 UTC | 2021-12-20 21:19 UTC | 2.7 h | resolved |
| [SMS Delivery Delays to Iraq Zain Network](https://rewindex.com/company/twilio/incidents/jdwrwtpm1kbf.md) | minor | 2021-12-21 08:50 UTC | 2021-12-21 11:06 UTC | 2.3 h | resolved |
| [Inbound Message Delivery Delays to a Subset of Twilio Philippines Phone Numbers](https://rewindex.com/company/twilio/incidents/v4l29png2l6s.md) | minor | 2021-12-21 09:45 UTC | 2021-12-21 15:38 UTC | 5.9 h | resolved |
| [SMS Delivery Delays to Nigeria Glo Mobile Network](https://rewindex.com/company/twilio/incidents/z9j9sh83tdcd.md) | minor | 2021-12-21 11:02 UTC | 2021-12-21 15:08 UTC | 4.1 h | resolved |
| [SMS Delivery Delays to Telemob Network in Burkina Faso](https://rewindex.com/company/twilio/incidents/kmvr5ysgjtnp.md) | minor | 2021-12-21 23:19 UTC | 2021-12-22 11:58 UTC | 13 h | resolved |
| [SMS Delivery Delays To Ufone Network in Pakistan](https://rewindex.com/company/twilio/incidents/3nb0947brb03.md) | minor | 2021-12-21 23:54 UTC | 2021-12-22 12:53 UTC | 13 h | resolved |
| [Data Center Outage Impacting Multiple Services](https://rewindex.com/company/twilio/incidents/2hjyv5p9wh3k.md) | major | 2021-12-22 12:17 UTC | 2021-12-23 05:38 UTC | 17 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/hrc9dqswwbgd.md) | none | 2021-12-22 22:48 UTC | 2021-12-22 22:53 UTC | 5 min | resolved |
| [Intermittent Delivery of AT&T Mobile Originated SMS to Twilio Short Codes](https://rewindex.com/company/twilio/incidents/8kmt3ry1rwts.md) | minor | 2021-12-22 22:50 UTC | 2021-12-29 18:46 UTC | 7 d | resolved |
| [Delays in Sending Verification Email in Console](https://rewindex.com/company/twilio/incidents/qg25jfwbn3qg.md) | minor | 2021-12-23 08:21 UTC | 2021-12-23 08:40 UTC | 19 min | resolved |
| [Stuck and Ghost Task in Realtime View and Team View in Flex Insights](https://rewindex.com/company/twilio/incidents/8kfcswp0ls2q.md) | minor | 2021-12-23 09:04 UTC | 2021-12-24 10:15 UTC | 25 h | resolved |
| [SMS Delivery Delays to Vietnam Mobifone Network](https://rewindex.com/company/twilio/incidents/xggd4jnpmj3x.md) | minor | 2021-12-23 09:19 UTC | 2021-12-23 16:25 UTC | 7.1 h | resolved |
| [SMS Delivery Delays to Vodafone Egypt](https://rewindex.com/company/twilio/incidents/dnvr385gsw75.md) | minor | 2021-12-23 09:38 UTC | 2021-12-23 23:02 UTC | 13 h | resolved |
| [Authy SMS Delivery Failures to Russia Mobile MTS](https://rewindex.com/company/twilio/incidents/73lv1461ybnq.md) | minor | 2021-12-23 10:23 UTC | 2021-12-23 19:05 UTC | 8.7 h | resolved |
| [Outbound SMS Delivery Delays to Nigeria Glo Mobile Network](https://rewindex.com/company/twilio/incidents/tlz4p87l40g2.md) | minor | 2021-12-23 16:09 UTC | 2021-12-27 08:36 UTC | 4 d | resolved |
| [Inbound Call Failures to a Subset of Twilio Portugal Mobile Number](https://rewindex.com/company/twilio/incidents/gym0925c2027.md) | minor | 2021-12-24 12:18 UTC | 2021-12-24 16:42 UTC | 4.4 h | resolved |
| [SMS Delivery Delays to Netone Zimbabwe](https://rewindex.com/company/twilio/incidents/3pl00h64wm10.md) | minor | 2021-12-24 12:54 UTC | 2021-12-27 17:33 UTC | 3 d | resolved |
| [SMS Delivery Delays to BeMobile Botswana](https://rewindex.com/company/twilio/incidents/p3yq1407651n.md) | minor | 2021-12-25 12:04 UTC | 2021-12-25 22:21 UTC | 10 h | resolved |
| [MMS Delivery Delays With U.S Twilio Longcodes](https://rewindex.com/company/twilio/incidents/n0hyfwc8vxz0.md) | major | 2021-12-25 16:03 UTC | 2021-12-25 21:52 UTC | 5.8 h | resolved |
| [Delivery Failures to a Subset of Twilio UK Long Codes](https://rewindex.com/company/twilio/incidents/9qy9hh92czlp.md) | minor | 2021-12-25 16:12 UTC | 2021-12-25 17:24 UTC | 1.2 h | resolved |
| [SMS Delivery Delays From Twilio to Digicel Network in Haiti and Trinidad and Tobago](https://rewindex.com/company/twilio/incidents/hs90kdgvnm0z.md) | minor | 2021-12-25 16:44 UTC | 2021-12-26 11:16 UTC | 19 h | resolved |
| [SMS Delivery Delays From Twilio to Libya Al-Madar Network](https://rewindex.com/company/twilio/incidents/y5brdrnz1p7w.md) | minor | 2021-12-25 17:27 UTC | 2021-12-26 00:12 UTC | 6.8 h | resolved |
| [SMS Delivery Delays From Twilio to Movistar in El Salvador](https://rewindex.com/company/twilio/incidents/xrsmttk3vw07.md) | minor | 2021-12-25 18:41 UTC | 2021-12-25 21:55 UTC | 3.2 h | resolved |
| [SMS Delivery Delay To Vodafone Egypt](https://rewindex.com/company/twilio/incidents/1htxfk0hwst9.md) | minor | 2021-12-26 14:53 UTC | 2021-12-27 00:47 UTC | 9.9 h | resolved |
| [SMS Delivery Reports Being Delayed To Mobile in Yemen](https://rewindex.com/company/twilio/incidents/kpb68j68zvct.md) | minor | 2021-12-26 22:26 UTC | 2021-12-27 06:22 UTC | 7.9 h | resolved |
| [SMS Delivery Reports Being Delayed to Carriers in the US](https://rewindex.com/company/twilio/incidents/qvrtd1lnwjsq.md) | minor | 2021-12-26 22:51 UTC | 2021-12-27 09:22 UTC | 11 h | resolved |
| [SMS Delivery Delays to Azercel in Azerbaijan](https://rewindex.com/company/twilio/incidents/mbfl6r0hkw7p.md) | minor | 2021-12-27 05:20 UTC | 2021-12-27 13:24 UTC | 8.1 h | resolved |
| [SMS Delivery Delays to Mobitel in Sri Lanka](https://rewindex.com/company/twilio/incidents/pmdrvv4pcj2h.md) | minor | 2021-12-27 06:08 UTC | 2021-12-27 16:18 UTC | 10 h | resolved |
| [SMS Delivery Report Delays to NRJ Network in France](https://rewindex.com/company/twilio/incidents/qqvqpdh1d684.md) | minor | 2021-12-27 10:00 UTC | 2021-12-27 12:57 UTC | 3.0 h | resolved |
| [Outbound SMS Delivery Delays to Nigeria Glo Mobile Network](https://rewindex.com/company/twilio/incidents/6fs4mlxvsgk8.md) | minor | 2021-12-27 12:22 UTC | 2021-12-28 08:16 UTC | 20 h | resolved |
| [Inbound SMS Failures to Twilio Spanish Phone Numbers](https://rewindex.com/company/twilio/incidents/0y2c5yn9bxyk.md) | minor | 2021-12-27 12:27 UTC | 2021-12-27 13:21 UTC | 54 min | resolved |
| [SMS Delivery Delays to Vodafone Network in Egypt](https://rewindex.com/company/twilio/incidents/rsykml4bqyy7.md) | minor | 2021-12-27 14:39 UTC | 2021-12-28 10:33 UTC | 20 h | resolved |
| [SMS Delivery Delays to Vodacom Network in Mozambique](https://rewindex.com/company/twilio/incidents/jbc31sszq9lq.md) | minor | 2021-12-27 16:11 UTC | 2021-12-28 04:04 UTC | 12 h | resolved |
| [SMS Delivery Failures on Yemen Mobile Yemen](https://rewindex.com/company/twilio/incidents/2100h54l04z3.md) | minor | 2021-12-27 21:48 UTC | 2021-12-28 04:31 UTC | 6.7 h | resolved |
| [SMS Delivery Delays to China Mobile Network In China](https://rewindex.com/company/twilio/incidents/40ht2v8zpjhl.md) | minor | 2021-12-28 05:12 UTC | 2021-12-30 06:49 UTC | 2 d | resolved |
| [SMS Delivery Delays to MTN Irancell Network in Iran](https://rewindex.com/company/twilio/incidents/mhxp7tp4ns77.md) | minor | 2021-12-28 09:24 UTC | 2021-12-28 14:15 UTC | 4.8 h | resolved |
| [SMS Delivery Delays to Nigeria Glo Mobile Network](https://rewindex.com/company/twilio/incidents/8lnzx5ct4z64.md) | minor | 2021-12-28 12:42 UTC | 2021-12-30 06:16 UTC | 42 h | resolved |
| [SMS Delivery Delays to Vodafone Network in Egypt](https://rewindex.com/company/twilio/incidents/6y5s9k1twm7d.md) | minor | 2021-12-28 13:34 UTC | 2021-12-28 22:33 UTC | 9.0 h | resolved |
| [Automated Alert: Customers Impacted for MMS Delivery Delays will be Contacted Directly](https://rewindex.com/company/twilio/incidents/gylkhwf0vkc9.md) | none | 2021-12-28 20:43 UTC | 2021-12-28 20:57 UTC | 14 min | resolved |
| [SMS Delivery Delays to Congo Orange and Tigo Networks](https://rewindex.com/company/twilio/incidents/gkvs901nshh5.md) | minor | 2021-12-28 22:20 UTC | 2021-12-29 05:55 UTC | 7.6 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/5t8v8sn2bdsl.md) | minor | 2021-12-29 05:19 UTC | 2021-12-29 06:07 UTC | 48 min | resolved |
| [SMS Delivery Delays to Meteor Mobile Network in Ireland](https://rewindex.com/company/twilio/incidents/14grzznpcbm8.md) | minor | 2021-12-29 08:35 UTC | 2021-12-29 16:15 UTC | 7.7 h | resolved |
| [SMS Delivery Delays from a Subset of Short Codes to Fibernetics in Canada](https://rewindex.com/company/twilio/incidents/q6s0lg2gx362.md) | minor | 2021-12-29 20:41 UTC | 2021-12-30 03:00 UTC | 6.3 h | resolved |
| [SMS Delivery Delays to Vietnam MobiFone Network](https://rewindex.com/company/twilio/incidents/p0j167l33kt3.md) | minor | 2021-12-30 00:49 UTC | 2021-12-31 13:21 UTC | 37 h | resolved |
| [SMS Delivery Delays To Vinaphone Network In Vietnam](https://rewindex.com/company/twilio/incidents/wmzm1v42ksxq.md) | minor | 2021-12-30 02:45 UTC | 2021-12-31 10:19 UTC | 32 h | resolved |
| [SMS Delivery Failures on Meteor Network in Ireland](https://rewindex.com/company/twilio/incidents/qm4mjjvq42wy.md) | minor | 2021-12-30 10:51 UTC | 2021-12-30 13:37 UTC | 2.8 h | resolved |
| [SMS Delivery Delays to Egypt Vodafone](https://rewindex.com/company/twilio/incidents/40mf8j6ybcwx.md) | minor | 2021-12-30 15:11 UTC | 2021-12-30 22:24 UTC | 7.2 h | resolved |
| [SMS Delivery Delays to Colombia Movistar](https://rewindex.com/company/twilio/incidents/fdxwr0kg48fg.md) | minor | 2021-12-30 18:09 UTC | 2021-12-31 01:42 UTC | 7.5 h | resolved |
| [Delivery Delays to Nigeria Glo Network](https://rewindex.com/company/twilio/incidents/1ts5md329fry.md) | minor | 2021-12-30 22:38 UTC | 2021-12-31 05:24 UTC | 6.8 h | resolved |
| [SMS Delivery Delays to Brazil Claro Network](https://rewindex.com/company/twilio/incidents/qp77y0y83whc.md) | minor | 2021-12-31 00:56 UTC | 2021-12-31 03:46 UTC | 2.8 h | resolved |
| [SMS Delivery Delays to Colombia Virgin Mobile](https://rewindex.com/company/twilio/incidents/xkkrz3d2k004.md) | minor | 2021-12-31 15:13 UTC | 2021-12-31 17:53 UTC | 2.7 h | resolved |
| [SMS Delivery Delays to Egypt Vodafone](https://rewindex.com/company/twilio/incidents/z8mvz6gf7flv.md) | minor | 2021-12-31 18:13 UTC | 2021-12-31 22:47 UTC | 4.6 h | resolved |
| [SMS Delivery Delays to Belgium Mobistar Network](https://rewindex.com/company/twilio/incidents/r00xnbqnttdg.md) | minor | 2021-12-31 22:39 UTC | 2022-01-01 06:52 UTC | 8.2 h | resolved |
| [SMS Delivery and Receipt Delays to France SFR Network](https://rewindex.com/company/twilio/incidents/3zrwdmd229nh.md) | minor | 2021-12-31 23:20 UTC | 2022-01-01 04:32 UTC | 5.2 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] Russia SMS Carrier Maintenance - MTS](https://rewindex.com/company/twilio/incidents/pltx8h1f1bkg.md) | maintenance | 2021-12-01 04:30 UTC | 2021-12-01 05:30 UTC | 1.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/1qp2gsjbdt6w.md) | maintenance | 2021-12-01 14:09 UTC | 2021-12-01 18:08 UTC | 4.0 h | resolved |
| [\[Scheduled\] Vietnam SMS Carrier Maintenance - MobiFone](https://rewindex.com/company/twilio/incidents/8zc4bglz1361.md) | maintenance | 2021-12-01 16:07 UTC | 2021-12-01 21:00 UTC | 4.9 h | resolved |
| [\[Scheduled\] Pakistan SMS Carrier Maintenance - CMPAK](https://rewindex.com/company/twilio/incidents/r4tkddk70kdn.md) | maintenance | 2021-12-01 19:00 UTC | 2021-12-02 01:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - All Airtel Networks](https://rewindex.com/company/twilio/incidents/rbnp5dl2t1jf.md) | maintenance | 2021-12-01 19:31 UTC | 2021-12-02 00:30 UTC | 5.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/dykm36h6lqx1.md) | maintenance | 2021-12-01 20:00 UTC | 2021-12-02 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/0nd05dkfmtrg.md) | maintenance | 2021-12-01 21:00 UTC | 2021-12-02 00:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] UK Voice Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/slmltg54s29n.md) | maintenance | 2021-12-01 23:01 UTC | 2021-12-02 01:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/ljm9x6ks2gks.md) | maintenance | 2021-12-02 04:10 UTC | 2021-12-02 06:01 UTC | 1.9 h | resolved |
| [\[Scheduled\] Peru SMS Carrier Maintenance - Claro](https://rewindex.com/company/twilio/incidents/7c9gw57phfkp.md) | maintenance | 2021-12-02 05:00 UTC | 2021-12-02 10:02 UTC | 5.0 h | resolved |
| [\[Scheduled\] US SMS & MMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/z675nqgwd39d.md) | maintenance | 2021-12-02 07:00 UTC | 2021-12-02 12:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] India SMS Carrier Maintenance - Airtel](https://rewindex.com/company/twilio/incidents/hdkqtxvt584n.md) | maintenance | 2021-12-02 07:30 UTC | 2021-12-03 00:30 UTC | 17 h | resolved |
| [\[Scheduled\] Pakistan SMS Carrier Maintenance - CMPAK](https://rewindex.com/company/twilio/incidents/7wnxc39cpm4j.md) | maintenance | 2021-12-02 19:00 UTC | 2021-12-03 01:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/q675yj9g7wml.md) | maintenance | 2021-12-02 22:00 UTC | 2021-12-03 04:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] UK SMS Carrier Maintenance - O2 UK](https://rewindex.com/company/twilio/incidents/xgrxmzcw9f11.md) | maintenance | 2021-12-02 23:00 UTC | 2021-12-03 06:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Multiple network](https://rewindex.com/company/twilio/incidents/jcr62v5lw07h.md) | maintenance | 2021-12-04 00:00 UTC | 2021-12-04 04:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/0pzgjxgx25m9.md) | maintenance | 2021-12-04 09:00 UTC | 2021-12-04 10:25 UTC | 1.4 h | resolved |
| [\[Scheduled\] UK SMS Carrier Maintenance - Vodafone UK](https://rewindex.com/company/twilio/incidents/n7dz6dd1p8zy.md) | maintenance | 2021-12-04 21:45 UTC | 2021-12-05 06:00 UTC | 8.3 h | resolved |
| [\[Scheduled\] Colombia SMS Carrier Maintenance - Avantel S.A](https://rewindex.com/company/twilio/incidents/nqxr2dhf7kbt.md) | maintenance | 2021-12-05 03:00 UTC | 2021-12-05 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Japan SMS Carrier Maintenance - SoftBank](https://rewindex.com/company/twilio/incidents/bv6qg0rhscmw.md) | maintenance | 2021-12-05 15:00 UTC | 2021-12-05 20:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Vietnam SMS Carrier Maintenance - Viettel](https://rewindex.com/company/twilio/incidents/pmx3xj12mmcs.md) | maintenance | 2021-12-06 17:00 UTC | 2021-12-06 20:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Indonesia SMS Carrier Maintenance - Telkomsel](https://rewindex.com/company/twilio/incidents/2mvln5v0gyl7.md) | maintenance | 2021-12-06 17:30 UTC | 2021-12-06 22:00 UTC | 4.5 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Tele2 & Altel](https://rewindex.com/company/twilio/incidents/7qtb76krg7zn.md) | maintenance | 2021-12-06 20:00 UTC | 2021-12-06 23:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/r6zs6j1vvq8n.md) | maintenance | 2021-12-06 20:00 UTC | 2021-12-07 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/s1258zskybtw.md) | maintenance | 2021-12-06 22:00 UTC | 2021-12-07 02:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Indonesia SMS Carrier Maintenance - Telkomsel Indonesia](https://rewindex.com/company/twilio/incidents/gddr6b36jz7c.md) | maintenance | 2021-12-07 19:00 UTC | 2021-12-07 21:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline Russia](https://rewindex.com/company/twilio/incidents/57bk59zh4hg3.md) | maintenance | 2021-12-07 22:00 UTC | 2021-12-08 04:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] UK SMS Carrier Maintenance - Vodafone UK](https://rewindex.com/company/twilio/incidents/wlm88b416dx8.md) | maintenance | 2021-12-07 22:16 UTC | 2021-12-08 06:00 UTC | 7.7 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - Telcel](https://rewindex.com/company/twilio/incidents/tbtnwtmg8nt3.md) | maintenance | 2021-12-08 03:01 UTC | 2021-12-08 08:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/jgqvw3h43zj1.md) | maintenance | 2021-12-08 04:00 UTC | 2021-12-08 05:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] Canada SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/fdc9lcrhmr8x.md) | maintenance | 2021-12-08 06:00 UTC | 2021-12-08 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] India SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/mq9pjyktrbpm.md) | maintenance | 2021-12-08 16:30 UTC | 2021-12-09 00:30 UTC | 8.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/kpjy21qygdy0.md) | maintenance | 2021-12-08 20:00 UTC | 2021-12-09 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/vw6v05gx0yg8.md) | maintenance | 2021-12-08 20:00 UTC | 2021-12-09 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] UK SMS Carrier Maintenance - O2 UK](https://rewindex.com/company/twilio/incidents/0llc2nmfxpbr.md) | maintenance | 2021-12-08 21:00 UTC | 2021-12-09 06:00 UTC | 9.0 h | resolved |
| [On Call Engineers are Investigating SMS Delivery Delays to Netcom Numbers in Norway](https://rewindex.com/company/twilio/incidents/440yfsjxmyly.md) | maintenance | 2021-12-08 23:08 UTC | 2021-12-08 23:21 UTC | 13 min | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/5s55d0yxkyw1.md) | maintenance | 2021-12-09 04:30 UTC | 2021-12-09 08:00 UTC | 3.5 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Small US Regional Carriers](https://rewindex.com/company/twilio/incidents/ngkdlnv7xgrh.md) | maintenance | 2021-12-09 05:00 UTC | 2021-12-10 09:30 UTC | 29 h | resolved |
| [\[Scheduled\] US MMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/zl6f93vffd3s.md) | maintenance | 2021-12-09 05:00 UTC | 2021-12-09 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - Sprint US](https://rewindex.com/company/twilio/incidents/dmy23m9gd8w6.md) | maintenance | 2021-12-09 06:00 UTC | 2021-12-09 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline Russia](https://rewindex.com/company/twilio/incidents/w64cy13cg225.md) | maintenance | 2021-12-09 15:01 UTC | 2021-12-09 21:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Taiwan SMS Carrier Maintenance - Chunghwa Telecom](https://rewindex.com/company/twilio/incidents/c43tkfrlh65q.md) | maintenance | 2021-12-09 15:01 UTC | 2021-12-09 16:00 UTC | 59 min | resolved |
| [\[Scheduled\] Malaysia SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/g2srvjpv4j62.md) | maintenance | 2021-12-09 18:00 UTC | 2021-12-09 22:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/4yp23nhcbp4r.md) | maintenance | 2021-12-09 22:01 UTC | 2021-12-10 05:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] UK SMS Carrier Maintenance - O2 UK](https://rewindex.com/company/twilio/incidents/yzh40wpym4wr.md) | maintenance | 2021-12-09 22:30 UTC | 2021-12-10 06:00 UTC | 7.5 h | resolved |
| [\[Scheduled\] Chile SMS Carrier Maintenance - Entel PCS](https://rewindex.com/company/twilio/incidents/1lvjtdglq800.md) | maintenance | 2021-12-10 04:20 UTC | 2021-12-10 07:00 UTC | 2.7 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/tqj286sbrywn.md) | maintenance | 2021-12-10 05:00 UTC | 2021-12-10 07:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Malaysia SMS Carrier Maintenance - Tune Talk Sdn Bhd (Celcom MVNO)](https://rewindex.com/company/twilio/incidents/qyl2lyh3p3wd.md) | maintenance | 2021-12-10 18:17 UTC | 2021-12-11 02:15 UTC | 8.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/9zmzpybylwb3.md) | maintenance | 2021-12-13 08:46 UTC | 2021-12-13 16:00 UTC | 7.2 h | resolved |
| [\[Scheduled\] Malaysia SMS Carrier Maintenance - Celcom](https://rewindex.com/company/twilio/incidents/3f2x3hrtm806.md) | maintenance | 2021-12-13 16:00 UTC | 2021-12-13 22:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] India SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/c6snjp79c6lb.md) | maintenance | 2021-12-13 16:30 UTC | 2021-12-14 00:30 UTC | 8.0 h | resolved |
| [\[Scheduled\] Srilanka SMS Carrier Maintenance- Hutchison Telecommunications](https://rewindex.com/company/twilio/incidents/3xqllddnj4r6.md) | maintenance | 2021-12-13 18:00 UTC | 2021-12-13 22:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/6dclzh84zsw8.md) | maintenance | 2021-12-13 20:00 UTC | 2021-12-14 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/vd3f6b6xqcgn.md) | maintenance | 2021-12-13 20:00 UTC | 2021-12-14 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Multiple Network](https://rewindex.com/company/twilio/incidents/5hhcxzp0yy24.md) | maintenance | 2021-12-13 21:00 UTC | 2021-12-14 04:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/ltmkl13ghcvv.md) | maintenance | 2021-12-13 22:00 UTC | 2021-12-14 04:01 UTC | 6.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/99z6sxknxkr8.md) | maintenance | 2021-12-13 22:00 UTC | 2021-12-14 05:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - AT&T](https://rewindex.com/company/twilio/incidents/0wfbtmlglw0p.md) | maintenance | 2021-12-14 06:00 UTC | 2021-12-14 12:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Small US Regional Carriers](https://rewindex.com/company/twilio/incidents/zbkhg6mk7qqj.md) | maintenance | 2021-12-14 10:00 UTC | 2021-12-14 12:01 UTC | 2.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Airtel SMS Hub](https://rewindex.com/company/twilio/incidents/730lchr9txwh.md) | maintenance | 2021-12-14 18:30 UTC | 2021-12-15 00:30 UTC | 6.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/zzldsjltgfjt.md) | maintenance | 2021-12-14 22:01 UTC | 2021-12-15 04:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Ireland SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/yn0y3fgwfvcb.md) | maintenance | 2021-12-15 08:30 UTC | 2021-12-15 09:30 UTC | 1.0 h | resolved |
| [\[Scheduled\] Japan SMS Carrier Maintenance - SoftBank](https://rewindex.com/company/twilio/incidents/9lhm3pgsrnp3.md) | maintenance | 2021-12-15 14:01 UTC | 2021-12-15 21:30 UTC | 7.5 h | resolved |
| [\[Scheduled\] Vietnam SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/gcgfy3hwzpzw.md) | maintenance | 2021-12-15 15:30 UTC | 2021-12-15 16:00 UTC | 30 min | resolved |
| [\[Scheduled\] Vietnam SMS Carrier Maintenance - MobiFone](https://rewindex.com/company/twilio/incidents/vdm4lnnztdz1.md) | maintenance | 2021-12-15 16:00 UTC | 2021-12-15 17:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] Kyrgyzstan SMS Carrier Maintenance - MEGACOM](https://rewindex.com/company/twilio/incidents/xc264t3vx44p.md) | maintenance | 2021-12-15 19:01 UTC | 2021-12-16 01:50 UTC | 6.8 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/1k7k3ybm338x.md) | maintenance | 2021-12-15 20:00 UTC | 2021-12-16 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/twz4hjwhcpyy.md) | maintenance | 2021-12-15 20:01 UTC | 2021-12-16 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Altel JSC & Tele2](https://rewindex.com/company/twilio/incidents/11x13d68s0h1.md) | maintenance | 2021-12-15 20:31 UTC | 2021-12-15 22:15 UTC | 1.7 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/bykhsw19837b.md) | maintenance | 2021-12-15 21:00 UTC | 2021-12-16 00:01 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/1lpqmzn93tb6.md) | maintenance | 2021-12-15 21:00 UTC | 2021-12-16 00:01 UTC | 3.0 h | resolved |
| [\[Scheduled\] Peru SMS Carrier Maintenance - Claro](https://rewindex.com/company/twilio/incidents/1b6cxzc1492h.md) | maintenance | 2021-12-16 03:00 UTC | 2021-12-16 11:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/vp878ps36d5b.md) | maintenance | 2021-12-16 05:11 UTC | 2021-12-16 14:00 UTC | 8.8 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/t7swvt0h0jx8.md) | maintenance | 2021-12-16 07:00 UTC | 2021-12-16 10:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/09nb6pj1pxvt.md) | maintenance | 2021-12-16 18:00 UTC | 2021-12-16 21:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/pyjq5bc3kr7f.md) | maintenance | 2021-12-16 21:00 UTC | 2021-12-17 00:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Peru SMS Carrier Maintenance - Claro](https://rewindex.com/company/twilio/incidents/rsn7mhzdhv9b.md) | maintenance | 2021-12-17 04:00 UTC | 2021-12-17 12:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - Telcel](https://rewindex.com/company/twilio/incidents/7rv54j5dr1d3.md) | maintenance | 2021-12-17 05:00 UTC | 2021-12-17 05:59 UTC | 59 min | resolved |
| [\[Scheduled\] Mexico SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/9g9lc5hs444r.md) | maintenance | 2021-12-18 06:00 UTC | 2021-12-18 07:30 UTC | 1.5 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/lf3ltqd18nkl.md) | maintenance | 2021-12-18 22:01 UTC | 2021-12-18 23:00 UTC | 59 min | resolved |
| [\[Scheduled\] India SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/97j5q1rl2qjd.md) | maintenance | 2021-12-20 17:30 UTC | 2021-12-21 00:30 UTC | 7.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - KCell](https://rewindex.com/company/twilio/incidents/kr8jdqww12v9.md) | maintenance | 2021-12-20 18:00 UTC | 2021-12-20 21:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Malaysia SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/f2n9673n3b2z.md) | maintenance | 2021-12-20 18:00 UTC | 2021-12-20 22:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/gn58rlmyg62x.md) | maintenance | 2021-12-20 20:00 UTC | 2021-12-21 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/830tsly11ckk.md) | maintenance | 2021-12-20 20:00 UTC | 2021-12-21 00:01 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/dw4yfy4y5g2v.md) | maintenance | 2021-12-20 21:00 UTC | 2021-12-21 00:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - MTS (Mobile TeleSystems)](https://rewindex.com/company/twilio/incidents/t73mzxlbpqzb.md) | maintenance | 2021-12-21 07:00 UTC | 2021-12-24 15:00 UTC | 3 d | resolved |
| [\[Scheduled\] India SMS Carrier Maintenance - Vodafone-Idea](https://rewindex.com/company/twilio/incidents/hxc028j15m82.md) | maintenance | 2021-12-21 15:30 UTC | 2021-12-22 00:30 UTC | 9.0 h | resolved |
| [\[Scheduled\] UAE SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/z2j6j7th1465.md) | maintenance | 2021-12-21 20:02 UTC | 2021-12-22 02:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Altel & Tele2](https://rewindex.com/company/twilio/incidents/np3l24zwh7y9.md) | maintenance | 2021-12-21 20:02 UTC | 2021-12-21 23:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/w4v8nrnypsp4.md) | maintenance | 2021-12-21 21:00 UTC | 2021-12-22 00:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] UK SMS Carrier Maintenance - 3 (Hutchison 3G UK Ltd)](https://rewindex.com/company/twilio/incidents/7q8bf328dlrz.md) | maintenance | 2021-12-22 07:00 UTC | 2021-12-22 08:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/jxzp99m7zhwl.md) | maintenance | 2021-12-22 07:00 UTC | 2021-12-22 10:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Malaysia SMS Carrier Maintenance - DiGi Telecommunications](https://rewindex.com/company/twilio/incidents/d48hl6jrtx6h.md) | maintenance | 2021-12-22 17:00 UTC | 2021-12-22 20:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/dsr2gxswl6mm.md) | maintenance | 2021-12-22 20:01 UTC | 2021-12-23 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/2dy67wvj42sf.md) | maintenance | 2021-12-22 20:01 UTC | 2021-12-23 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/rb2zltbtz81s.md) | maintenance | 2021-12-22 22:00 UTC | 2021-12-23 04:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - MTS](https://rewindex.com/company/twilio/incidents/8n9c310wbbmy.md) | maintenance | 2021-12-23 06:00 UTC | 2021-12-23 08:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/8wx8237gzl5s.md) | maintenance | 2021-12-23 17:00 UTC | 2021-12-23 23:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Belgium SMS Carrier Maintenance - Orange (fka Mobistar S.A.)](https://rewindex.com/company/twilio/incidents/l0x58x0z2rx6.md) | maintenance | 2021-12-24 17:01 UTC | 2021-12-25 02:00 UTC | 9.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline](https://rewindex.com/company/twilio/incidents/wnhjj3s83xfd.md) | maintenance | 2021-12-24 20:00 UTC | 2021-12-25 02:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/21hdc5ljm9wx.md) | maintenance | 2021-12-27 20:00 UTC | 2021-12-28 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/hrjlrp736v0j.md) | maintenance | 2021-12-27 20:00 UTC | 2021-12-28 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Colombia SMS Carrier Maintenance - Telefonica Mobiles](https://rewindex.com/company/twilio/incidents/22pnt1gbgnyv.md) | maintenance | 2021-12-29 04:40 UTC | 2021-12-29 05:00 UTC | 20 min | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon](https://rewindex.com/company/twilio/incidents/vgyk9bhlj09g.md) | maintenance | 2021-12-29 20:00 UTC | 2021-12-30 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] UK SMS Carrier Maintenance - Hutchison 3G UK](https://rewindex.com/company/twilio/incidents/s8td6z9d01pg.md) | maintenance | 2021-12-31 22:00 UTC | 2022-01-01 04:00 UTC | 6.0 h | resolved |

## Cite this

Twilio posted 147 status incidents in December 2021 (3 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/twilio/2021/12
- Citation: Twilio, “Twilio in December 2021” (2021-12-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/2021/12 (CC BY 4.0).
- Markdown link: `[Twilio: Twilio in December 2021 (2021-12-01)](https://rewindex.com/company/twilio/2021/12)`


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Canonical: https://rewindex.com/company/twilio/2021/12 · Markdown: https://rewindex.com/company/twilio/2021/12.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T11:04:05.360Z