# Twilio in March 2019: incidents, uptime and changes

> Twilio in March 2019: 37 incidents on its status page (2 major or critical), 95.28% 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/2019/03
Last updated: 2019-04-01T00:00:00Z

- Incidents posted: 37 (major/critical: 2) · Maintenance: 12
- By vendor impact label: critical 2, minor 32, none 3
- Uptime (vendor-reported): 95.28% free of major/critical incidents, 69.25% free of any incident; outage time 35 h 6 min, incident time 9.5 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [February 2019](https://rewindex.com/company/twilio/2019/02.md) · Next: [April 2019](https://rewindex.com/company/twilio/2019/04.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 |
| --- | --- | --- | --- | --- | --- |
| [All inbound and outbound MMS and SMS messages are experiencing delays of 15 minutes or more](https://rewindex.com/company/twilio/incidents/23525d918lhr.md) | critical | 2019-03-05 16:26 UTC | 2019-03-05 17:32 UTC | 1.1 h | resolved |
| [Outbound voice calls to China failing](https://rewindex.com/company/twilio/incidents/5z8g56f783hw.md) | critical | 2019-03-29 19:21 UTC | 2019-03-31 05:21 UTC | 34 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [SMS delivery delays towards AT&T and Cricket Mobile Handsets from US Short Codes](https://rewindex.com/company/twilio/incidents/whfrxdfyxwb0.md) | minor | 2019-03-01 19:40 UTC | 2019-03-01 20:27 UTC | 47 min | resolved |
| [Inbound and outbound call failures for various countries](https://rewindex.com/company/twilio/incidents/yk7nr388rqj0.md) | none | 2019-03-05 10:03 UTC | 2019-03-05 10:03 UTC | 0 min | resolved |
| [All inbound and outbound MMS and SMS messages are experiencing delays of 15 minutes or more](https://rewindex.com/company/twilio/incidents/23525d918lhr.md) | critical | 2019-03-05 16:26 UTC | 2019-03-05 17:32 UTC | 1.1 h | resolved |
| [SMS delivery delays towards Orange Morocco](https://rewindex.com/company/twilio/incidents/tt93kc9sbk60.md) | minor | 2019-03-06 17:20 UTC | 2019-03-06 19:05 UTC | 1.8 h | resolved |
| [Email delivery delays](https://rewindex.com/company/twilio/incidents/ylwjmv162662.md) | minor | 2019-03-08 00:14 UTC | 2019-03-08 00:57 UTC | 43 min | resolved |
| [Verizon SMS Duplicate Delivery in OH and IN](https://rewindex.com/company/twilio/incidents/wmzh88gvdk5j.md) | minor | 2019-03-08 18:41 UTC | 2019-03-11 03:18 UTC | 2 d | resolved |
| [Calls failing to some Singapore numbers](https://rewindex.com/company/twilio/incidents/bhc6y67t2zbv.md) | minor | 2019-03-09 17:42 UTC | 2019-03-09 18:42 UTC | 1.0 h | resolved |
| [SMS Delivery Delays to AT&T US](https://rewindex.com/company/twilio/incidents/n4dhm3g99kbm.md) | minor | 2019-03-09 19:35 UTC | 2019-03-09 19:43 UTC | 8 min | resolved |
| [Inbound calls failing on some Colombia numbers](https://rewindex.com/company/twilio/incidents/t14l7l59kf1g.md) | minor | 2019-03-09 19:41 UTC | 2019-03-10 02:15 UTC | 6.6 h | resolved |
| [SMS delivery failures to Movilnet Venezuela](https://rewindex.com/company/twilio/incidents/3j4d1f295fdv.md) | minor | 2019-03-10 18:47 UTC | 2019-03-10 22:02 UTC | 3.3 h | resolved |
| [SMS Delivery Failures to MTN, Nigeria](https://rewindex.com/company/twilio/incidents/qxsdttjjkbry.md) | minor | 2019-03-11 05:03 UTC | 2019-03-11 11:02 UTC | 6.0 h | resolved |
| [Delivery Reports Failures on US Long Codes to Sprint Handsets](https://rewindex.com/company/twilio/incidents/whlkwnyqtyvc.md) | minor | 2019-03-11 21:24 UTC | 2019-03-12 06:34 UTC | 9.2 h | resolved |
| [SMS Delivery Failures to Verizon handsets on the East Coast](https://rewindex.com/company/twilio/incidents/md5kzc8py6w2.md) | none | 2019-03-12 08:18 UTC | 2019-03-12 08:18 UTC | 0 min | resolved |
| [Higher than normal latency for responses from  /calls REST API](https://rewindex.com/company/twilio/incidents/k8vr10q7xxgb.md) | minor | 2019-03-12 22:34 UTC | 2019-03-12 22:50 UTC | 16 min | resolved |
| [Delays Receiving SMS to Portugal Numbers](https://rewindex.com/company/twilio/incidents/vr3kf4r5tmlq.md) | minor | 2019-03-13 13:24 UTC | 2019-03-13 15:24 UTC | 2.0 h | resolved |
| [Debug events unavailable in console and no alerts will trigger](https://rewindex.com/company/twilio/incidents/dlzz5kp1hv0n.md) | minor | 2019-03-13 16:46 UTC | 2019-03-13 21:30 UTC | 4.7 h | resolved |
| [SMS To TIM Brazil Handsets are delayed](https://rewindex.com/company/twilio/incidents/2ljzljw1xvbn.md) | minor | 2019-03-14 20:44 UTC | 2019-03-15 02:14 UTC | 5.5 h | resolved |
| [Short Code SMS To AT&T and Cricket Wireless handsets in the US are delayed](https://rewindex.com/company/twilio/incidents/wm16ymk51ccn.md) | minor | 2019-03-14 22:30 UTC | 2019-03-15 02:20 UTC | 3.8 h | resolved |
| [Unable to deliver SMS to Beeline Russia handsets in Russia](https://rewindex.com/company/twilio/incidents/1yx582wcl64s.md) | minor | 2019-03-15 01:07 UTC | 2019-03-15 03:51 UTC | 2.7 h | resolved |
| [MMS Delivery Receipt Delay for Twilio US Long Codes](https://rewindex.com/company/twilio/incidents/1w3qj2gw9p7k.md) | minor | 2019-03-15 01:39 UTC | 2019-03-15 07:25 UTC | 5.8 h | resolved |
| [US Toll-Free SMS Delivery Delays to Sprint](https://rewindex.com/company/twilio/incidents/dhngz4vmf4r7.md) | minor | 2019-03-15 08:10 UTC | 2019-03-15 11:12 UTC | 3.0 h | resolved |
| [Undelivered SMS from US Twilio Short Codes](https://rewindex.com/company/twilio/incidents/gcx3sklv2m8n.md) | minor | 2019-03-15 18:46 UTC | 2019-03-15 19:36 UTC | 50 min | resolved |
| [Elevated error rates serving Twilio Assets](https://rewindex.com/company/twilio/incidents/ks15lwtjqs2m.md) | minor | 2019-03-16 04:21 UTC | 2019-03-16 06:25 UTC | 2.1 h | resolved |
| [Wireless SIM connectivity in Austin Texas is unavailable](https://rewindex.com/company/twilio/incidents/5nn099j3wpkj.md) | minor | 2019-03-16 20:51 UTC | 2019-03-17 01:07 UTC | 4.3 h | resolved |
| [MMS Delivery Receipt Delays to US Handsets](https://rewindex.com/company/twilio/incidents/17swdwrlq52j.md) | minor | 2019-03-18 00:22 UTC | 2019-03-18 08:03 UTC | 7.7 h | resolved |
| [Failures receiving calls in multiple European countries.](https://rewindex.com/company/twilio/incidents/sjxnq99tz1kw.md) | minor | 2019-03-18 17:52 UTC | 2019-03-18 23:15 UTC | 5.4 h | resolved |
| [SMS delivery delayed for Sprint in US](https://rewindex.com/company/twilio/incidents/yc22zz1jt12m.md) | none | 2019-03-19 05:42 UTC | 2019-03-19 09:12 UTC | 3.5 h | resolved |
| [Failures in sending SMS from short codes to Bell Mobility Canada](https://rewindex.com/company/twilio/incidents/lt7f2sfpbdrb.md) | minor | 2019-03-21 01:16 UTC | 2019-03-21 05:17 UTC | 4.0 h | resolved |
| [Delays sending and receiving MMS over US short codes and long codes.](https://rewindex.com/company/twilio/incidents/nydwffbr6ljd.md) | minor | 2019-03-21 02:09 UTC | 2019-03-21 06:47 UTC | 4.6 h | resolved |
| [Programmable Wireless usage data delayed](https://rewindex.com/company/twilio/incidents/p2y62kyxcf5c.md) | minor | 2019-03-25 06:49 UTC | 2019-03-27 18:47 UTC | 2 d | resolved |
| [SMS Delivery Failures to MCI Network, Iran](https://rewindex.com/company/twilio/incidents/t90q14p2wgqs.md) | minor | 2019-03-25 09:01 UTC | 2019-03-25 10:28 UTC | 1.4 h | resolved |
| [Voice Insights data delayed](https://rewindex.com/company/twilio/incidents/d2539w8l549j.md) | minor | 2019-03-25 10:21 UTC | 2019-03-25 11:17 UTC | 56 min | resolved |
| [Connectivity errors with Javascript SDK v1](https://rewindex.com/company/twilio/incidents/mh11mzmjrk7f.md) | minor | 2019-03-26 21:03 UTC | 2019-03-26 21:37 UTC | 34 min | resolved |
| [Call Failures to China](https://rewindex.com/company/twilio/incidents/xv2y8r77l6gd.md) | minor | 2019-03-28 06:56 UTC | 2019-03-28 15:48 UTC | 8.9 h | resolved |
| [SMS delivery delays towards AT&T from US Short Codes](https://rewindex.com/company/twilio/incidents/f9ys8ft0l5qv.md) | minor | 2019-03-28 20:05 UTC | 2019-03-28 22:28 UTC | 2.4 h | resolved |
| [SMS delivery delays towards AT&T from Twilio US Short Codes](https://rewindex.com/company/twilio/incidents/0gqb7y7g6s4y.md) | minor | 2019-03-29 18:25 UTC | 2019-03-29 19:27 UTC | 1.0 h | resolved |
| [Outbound voice calls to China failing](https://rewindex.com/company/twilio/incidents/5z8g56f783hw.md) | critical | 2019-03-29 19:21 UTC | 2019-03-31 05:21 UTC | 34 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] AT&T US - Short Code SMS & MMS Carrier Maintenance - Mar 1, 00:00 - 03:00 PT](https://rewindex.com/company/twilio/incidents/195nqgvv816m.md) | maintenance | 2019-03-01 08:00 UTC | 2019-03-01 11:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] US\\Canada Toll-Free SMS carrier maintenance Mar 06 22:00 - Mar 07 00:00 PT](https://rewindex.com/company/twilio/incidents/539y3521j0qq.md) | maintenance | 2019-03-07 06:00 UTC | 2019-03-07 08:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] T-Mobile US - Toll-Free and Short Code SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/k2r7c2z27gbq.md) | maintenance | 2019-03-14 07:00 UTC | 2019-03-14 11:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Verizon US - Toll-Free SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/hr6g07y56nj8.md) | maintenance | 2019-03-17 03:00 UTC | 2019-03-17 11:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - Beeline Network in Russia](https://rewindex.com/company/twilio/incidents/nt0vd7kh05xy.md) | maintenance | 2019-03-18 21:00 UTC | 2019-03-19 02:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/mg6thqcqfnd4.md) | maintenance | 2019-03-21 05:00 UTC | 2019-03-21 07:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] AT&T SMS & MMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/9wbc6v2clqnq.md) | maintenance | 2019-03-22 02:01 UTC | 2019-03-22 11:00 UTC | 9.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/t4m37bkmtfyj.md) | maintenance | 2019-03-22 05:00 UTC | 2019-03-22 07:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Sprint US - Short Code SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/srn8ctw13q9c.md) | maintenance | 2019-03-22 06:00 UTC | 2019-03-22 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US short code and toll-free SMS carrier maintenance March 22 00:00 - March 22 03:00 PDT](https://rewindex.com/company/twilio/incidents/zlklt0mrk0ys.md) | maintenance | 2019-03-22 07:00 UTC | 2019-03-22 10:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] US short code SMS carrier maintenance March 25 23:00 - March 26 03:00 PDT](https://rewindex.com/company/twilio/incidents/83dv8yg7f8l9.md) | maintenance | 2019-03-26 06:01 UTC | 2019-03-26 10:01 UTC | 4.0 h | resolved |
| [\[Scheduled\] US short code SMS carrier maintenance March 28 23:00 - March 29 03:00 PDT](https://rewindex.com/company/twilio/incidents/dlb1jplbn8bz.md) | maintenance | 2019-03-29 06:01 UTC | 2019-03-29 10:00 UTC | 4.0 h | resolved |

## Cite this

Twilio posted 37 status incidents in March 2019 (2 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/twilio/2019/03
- Citation: Twilio, “Twilio in March 2019” (2019-03-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/2019/03 (CC BY 4.0).
- Markdown link: `[Twilio: Twilio in March 2019 (2019-03-01)](https://rewindex.com/company/twilio/2019/03)`


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Canonical: https://rewindex.com/company/twilio/2019/03 · Markdown: https://rewindex.com/company/twilio/2019/03.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T16:50:17.470Z