# Twilio in April 2021: incidents, uptime and changes

> Twilio in April 2021: 106 incidents on its status page (0 major or critical), 100% 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/2021/04
Last updated: 2021-05-01T14:09:00Z

- Incidents posted: 106 (major/critical: 0) · Maintenance: 67
- By vendor impact label: minor 79, none 27
- Uptime (vendor-reported): 100% free of major/critical incidents, 47.46% free of any incident; outage time 0 min, incident time 15.8 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [March 2021](https://rewindex.com/company/twilio/2021/03.md) · Next: [May 2021](https://rewindex.com/company/twilio/2021/05.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._

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Message Delivery Failures of Pre-registered Messages to China, China Mobile and China Unicom](https://rewindex.com/company/twilio/incidents/pk0lpvnxcpb6.md) | minor | 2021-04-01 13:06 UTC | 2021-04-02 03:02 UTC | 14 h | resolved |
| [SMS Delivery Delays over Canada Bell Mobility Network](https://rewindex.com/company/twilio/incidents/3k9j442d14g5.md) | minor | 2021-04-01 15:47 UTC | 2021-04-01 22:34 UTC | 6.8 h | resolved |
| [SMS Delivery Failures to Rogers (302-720) and Fido (302-370) Canada Networks Using Toll Free Numbers](https://rewindex.com/company/twilio/incidents/zs656z2t2923.md) | minor | 2021-04-01 16:24 UTC | 2021-04-01 19:38 UTC | 3.2 h | resolved |
| [SMS Delivery Delays to United States Cellular Corp Using Toll Free numbers](https://rewindex.com/company/twilio/incidents/vmj1yqkjqpkj.md) | minor | 2021-04-01 19:02 UTC | 2021-04-01 23:06 UTC | 4.1 h | resolved |
| [SMS Delivery Delays to Canada - Bell Mobility via Short Code](https://rewindex.com/company/twilio/incidents/4z6mfc79nxtn.md) | minor | 2021-04-01 21:19 UTC | 2021-04-02 03:03 UTC | 5.7 h | resolved |
| [Packet Loss For Inbound Voice Calls In Mexico](https://rewindex.com/company/twilio/incidents/43wfxs2ts87k.md) | minor | 2021-04-02 01:36 UTC | 2021-04-02 03:10 UTC | 1.6 h | resolved |
| [SMS Delivery Delays to Egypt Etisalat Network](https://rewindex.com/company/twilio/incidents/gcnf3t4d3q29.md) | minor | 2021-04-02 05:16 UTC | 2021-04-02 06:49 UTC | 1.6 h | resolved |
| [SMS Delivery Delay to Telesom Somalia](https://rewindex.com/company/twilio/incidents/1sq4vt0ct2n1.md) | minor | 2021-04-02 19:50 UTC | 2021-04-03 00:56 UTC | 5.1 h | resolved |
| [Packet Loss in US-WEST-2 Region Impacting Traffic](https://rewindex.com/company/twilio/incidents/j61875zh00hr.md) | none | 2021-04-02 23:19 UTC | 2021-04-02 23:19 UTC | 0 min | resolved |
| [MMS Delivery Delays to AT&T US(311-180)](https://rewindex.com/company/twilio/incidents/rn4m4knz6q00.md) | minor | 2021-04-03 15:43 UTC | 2021-04-03 20:18 UTC | 4.6 h | resolved |
| [SMS Delivery Receipt Delays to Canada - Bell Mobility and Bell Aliant](https://rewindex.com/company/twilio/incidents/cc4cqlddvv2g.md) | minor | 2021-04-03 18:57 UTC | 2021-04-03 23:24 UTC | 4.5 h | resolved |
| [SMS Delivery Failures to United Arab Emirates Etisalat and Du Network](https://rewindex.com/company/twilio/incidents/grvsbncdgdgd.md) | minor | 2021-04-05 08:10 UTC | 2021-04-05 12:20 UTC | 4.2 h | resolved |
| [SMS Delivery Delay to Orange Network in Congo Democratic Republic](https://rewindex.com/company/twilio/incidents/gs2pp561vkw6.md) | minor | 2021-04-05 13:43 UTC | 2021-04-08 06:28 UTC | 3 d | resolved |
| [Service Interruption for Inbound Calls on Flex Platform](https://rewindex.com/company/twilio/incidents/zwc221463fr7.md) | none | 2021-04-05 17:28 UTC | 2021-04-05 19:11 UTC | 1.7 h | resolved |
| [SMS Delivery Delay to Netone Zimbabwe](https://rewindex.com/company/twilio/incidents/5z2712wnzsgw.md) | minor | 2021-04-05 17:48 UTC | 2021-04-05 21:33 UTC | 3.8 h | resolved |
| [5xx Errors using TaskRouter Postflight API](https://rewindex.com/company/twilio/incidents/g570p1tkvb6c.md) | none | 2021-04-05 18:20 UTC | 2021-04-05 18:20 UTC | 0 min | resolved |
| [SMS Delivery Report Delays to GrameenPhone Bangladesh](https://rewindex.com/company/twilio/incidents/rp4g7vw7f71d.md) | minor | 2021-04-06 06:02 UTC | 2021-04-06 14:09 UTC | 8.1 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/fd6r5kz6sghk.md) | none | 2021-04-06 10:04 UTC | 2021-04-06 10:15 UTC | 11 min | resolved |
| [Subset of Twilio Australian Numbers Unable to Receive Inbound SMS](https://rewindex.com/company/twilio/incidents/y7v45kr6c6fm.md) | none | 2021-04-06 13:32 UTC | 2021-04-06 14:33 UTC | 1.0 h | resolved |
| [On Call Engineers are Investigating Intermittent Failed Calls to Twilio Sweden Numbers](https://rewindex.com/company/twilio/incidents/dkhb2bmrkn7j.md) | minor | 2021-04-06 13:46 UTC | 2021-04-06 15:05 UTC | 1.3 h | resolved |
| [SMS Delivery Failures on Turkey Turkcell](https://rewindex.com/company/twilio/incidents/40j25hydqq8q.md) | minor | 2021-04-07 08:49 UTC | 2021-04-07 14:52 UTC | 6.0 h | resolved |
| [SMS Delivery Report Delays to US and Canada over Subset of Twilio Toll-Free Numbers](https://rewindex.com/company/twilio/incidents/jqmnp6739t9f.md) | minor | 2021-04-07 13:02 UTC | 2021-04-07 16:24 UTC | 3.4 h | resolved |
| [Call Failures and Degraded Call Quality on Various Voice Products](https://rewindex.com/company/twilio/incidents/hvdqdyyhq0yy.md) | minor | 2021-04-07 13:08 UTC | 2021-04-07 15:11 UTC | 2.0 h | resolved |
| [500 Errors on Network Traversal Service REST API](https://rewindex.com/company/twilio/incidents/b22szvmlg5mh.md) | minor | 2021-04-07 15:39 UTC | 2021-04-07 16:01 UTC | 22 min | resolved |
| [Failures Calling Workflow-engine on Studio](https://rewindex.com/company/twilio/incidents/jhbmbsgw15bv.md) | minor | 2021-04-07 18:07 UTC | 2021-04-07 18:09 UTC | 2 min | resolved |
| [SMS Delivery Failures on Nigeria Airtel](https://rewindex.com/company/twilio/incidents/b4nkks2ykvkd.md) | minor | 2021-04-08 11:10 UTC | 2021-04-08 16:18 UTC | 5.1 h | resolved |
| [SMS Delivery Failures to Israel, Orange Network (425-01)](https://rewindex.com/company/twilio/incidents/0sxs425nyjdh.md) | minor | 2021-04-08 15:41 UTC | 2021-04-08 19:51 UTC | 4.2 h | resolved |
| [Delays in Voice Insights Call Summaries, Events and Metrics](https://rewindex.com/company/twilio/incidents/c78r1dm39hwm.md) | minor | 2021-04-08 17:19 UTC | 2021-04-09 01:35 UTC | 8.3 h | resolved |
| [SMS Delivery Delay to Somalia Telesom Network (637-001)](https://rewindex.com/company/twilio/incidents/5p7chqd3nhdp.md) | minor | 2021-04-08 21:19 UTC | 2021-04-09 00:08 UTC | 2.8 h | resolved |
| [Packet Loss Causing Dropped Calls and Call Quality Issues in Multiple Regions](https://rewindex.com/company/twilio/incidents/qpgxh4t7w5gf.md) | minor | 2021-04-09 15:21 UTC | 2021-04-09 17:16 UTC | 1.9 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/whs2msfvj1cm.md) | none | 2021-04-12 00:07 UTC | 2021-04-12 00:07 UTC | 0 min | resolved |
| [Programmable Messaging: Data returned via the messaging list endpoint is delayed for some customers](https://rewindex.com/company/twilio/incidents/m0xw8mld6wp7.md) | minor | 2021-04-12 00:32 UTC | 2021-04-12 03:22 UTC | 2.8 h | resolved |
| [Unable to Create Task Router Activities in the Twilio Console](https://rewindex.com/company/twilio/incidents/qd85jsw4z6pq.md) | minor | 2021-04-12 15:06 UTC | 2021-04-12 16:00 UTC | 54 min | resolved |
| [A Subset of Non-Beta Customers Unable to View Interconnect Connections in Console](https://rewindex.com/company/twilio/incidents/q10y5726zv16.md) | minor | 2021-04-12 15:31 UTC | 2021-04-12 16:51 UTC | 1.3 h | resolved |
| [SMS delivery delays for Twilio Yemen numbers](https://rewindex.com/company/twilio/incidents/m7nkpj9p21xn.md) | minor | 2021-04-12 18:57 UTC | 2021-04-12 23:24 UTC | 4.5 h | resolved |
| [SMS Delivery Failures to Nigeria Airtel Network](https://rewindex.com/company/twilio/incidents/9bxctx0xwbd8.md) | minor | 2021-04-13 10:53 UTC | 2021-04-13 12:14 UTC | 1.4 h | resolved |
| [Delayed Phone Number Billing in March for a Subset of Customers](https://rewindex.com/company/twilio/incidents/v1f1v4nhw68d.md) | minor | 2021-04-13 18:07 UTC | 2021-04-13 19:48 UTC | 1.7 h | resolved |
| [On Call Engineers are Investigating Potential Elevated API Error Rates](https://rewindex.com/company/twilio/incidents/th89qczd7gnh.md) | minor | 2021-04-13 18:55 UTC | 2021-04-13 19:00 UTC | 5 min | resolved |
| [Inbound SMS Failures to Brazilian Short Codes.](https://rewindex.com/company/twilio/incidents/lwc6ny1tj6pt.md) | none | 2021-04-14 02:01 UTC | 2021-04-14 02:09 UTC | 8 min | resolved |
| [SMS Delivery Delays to Russia Beeline over Alphanumeric Sender ID](https://rewindex.com/company/twilio/incidents/ntrlhgh6mzcj.md) | minor | 2021-04-14 10:37 UTC | 2021-04-14 16:07 UTC | 5.5 h | resolved |
| [SMS Delivery Delays to CTBC Network in Brazil](https://rewindex.com/company/twilio/incidents/lcwvs8z9mtv2.md) | minor | 2021-04-14 13:17 UTC | 2021-04-15 02:29 UTC | 13 h | resolved |
| [Packet Loss in US-WEST-2 Region Impacting Voice Traffic](https://rewindex.com/company/twilio/incidents/fvylt7lfsrfc.md) | none | 2021-04-14 16:38 UTC | 2021-04-14 16:38 UTC | 0 min | resolved |
| [SMS Delivery Delays To Indonesia Telkomsel](https://rewindex.com/company/twilio/incidents/x0pxxnkn5f9f.md) | minor | 2021-04-14 16:56 UTC | 2021-04-15 00:24 UTC | 7.5 h | resolved |
| [SMS Delivery Delays to Claro Network in Dominican Republic](https://rewindex.com/company/twilio/incidents/ngd1m5y6djy6.md) | minor | 2021-04-14 21:14 UTC | 2021-04-15 01:53 UTC | 4.7 h | resolved |
| [SMS Delivery Delays to Peru Claro](https://rewindex.com/company/twilio/incidents/ys1bt9fwgwlp.md) | minor | 2021-04-14 22:54 UTC | 2021-04-15 02:46 UTC | 3.9 h | resolved |
| [Inbound Call Failures for Colombia Landline Numbers](https://rewindex.com/company/twilio/incidents/ykrwstzgdrv2.md) | minor | 2021-04-15 04:59 UTC | 2021-04-15 17:52 UTC | 13 h | resolved |
| [SMS Delivery Delays To Philippines Smart](https://rewindex.com/company/twilio/incidents/6d046wsygbz3.md) | minor | 2021-04-15 07:08 UTC | 2021-04-15 15:28 UTC | 8.3 h | resolved |
| [SMS Content modification on SMS over India Networks](https://rewindex.com/company/twilio/incidents/qzttjh5m0ynd.md) | minor | 2021-04-15 11:45 UTC | 2021-04-15 12:23 UTC | 38 min | resolved |
| [Elevated Error Rates and Latency for Twilio Studio](https://rewindex.com/company/twilio/incidents/qny9wf7frf2l.md) | none | 2021-04-15 14:56 UTC | 2021-04-15 16:34 UTC | 1.6 h | resolved |
| [Error Received when Submitting “Let us get the Number For You” Form](https://rewindex.com/company/twilio/incidents/kpfl3qnyzbmy.md) | minor | 2021-04-15 14:57 UTC | 2021-04-15 18:25 UTC | 3.5 h | resolved |
| [Customers are Unable to Receive Calls to Twilio Domestic Numbers in Ecuador](https://rewindex.com/company/twilio/incidents/6dzkhz7tjng4.md) | minor | 2021-04-15 15:42 UTC | 2021-04-16 06:22 UTC | 15 h | resolved |
| [WhatsApp Request Access Processing Delays](https://rewindex.com/company/twilio/incidents/ztlbjyvtt966.md) | minor | 2021-04-15 16:08 UTC | 2021-04-15 18:29 UTC | 2.4 h | resolved |
| [Console Debugger, Monitor api and Alert Triggers Returning 5xxs](https://rewindex.com/company/twilio/incidents/kyxc7mp1bmyy.md) | minor | 2021-04-15 19:43 UTC | 2021-04-15 21:04 UTC | 1.4 h | resolved |
| [TwiMLBins Returning 5xxs](https://rewindex.com/company/twilio/incidents/pqd6b7t18lxq.md) | minor | 2021-04-15 19:48 UTC | 2021-04-15 20:55 UTC | 1.1 h | resolved |
| [404 Errors When Accessing Phone Numbers in Console](https://rewindex.com/company/twilio/incidents/rwbfkqkf2gc4.md) | minor | 2021-04-15 19:56 UTC | 2021-04-15 20:49 UTC | 53 min | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/lz565tnsntc0.md) | none | 2021-04-16 01:41 UTC | 2021-04-16 02:07 UTC | 26 min | resolved |
| [SMS High Delivery Delays to The UK Hutchison and Vodafone O2](https://rewindex.com/company/twilio/incidents/pg8cgmv02q33.md) | minor | 2021-04-16 10:05 UTC | 2021-04-16 16:34 UTC | 6.5 h | resolved |
| [SMS Delivery Delays to Globacom](https://rewindex.com/company/twilio/incidents/g9nb5yc92lgb.md) | minor | 2021-04-17 16:16 UTC | 2021-04-19 14:01 UTC | 46 h | resolved |
| [Flex Down Briefly During Deployment](https://rewindex.com/company/twilio/incidents/r885102g3y09.md) | none | 2021-04-18 23:47 UTC | 2021-04-18 23:47 UTC | 0 min | resolved |
| [SMS and MMS Delivery Delays to Canada Rogers/Fido Network](https://rewindex.com/company/twilio/incidents/nm6kgyj2cqb0.md) | minor | 2021-04-19 16:02 UTC | 2021-04-20 06:00 UTC | 14 h | resolved |
| [Usage and Billing Report Issues for Programmable Wireless Commands, SMS and Voice](https://rewindex.com/company/twilio/incidents/jpt99j323h41.md) | minor | 2021-04-19 16:10 UTC | 2021-04-20 09:05 UTC | 17 h | resolved |
| [Issue with Twilio Billing  Processing Causing Account Suspension and Balance Update Reflection for a Subset of Customers](https://rewindex.com/company/twilio/incidents/xjvfbysqr7rn.md) | minor | 2021-04-19 17:42 UTC | 2021-04-20 07:11 UTC | 13 h | resolved |
| [SMS Delivery Delay to Orange Network Dominican Republic](https://rewindex.com/company/twilio/incidents/ch521mz0vlr0.md) | minor | 2021-04-20 03:51 UTC | 2021-04-20 19:14 UTC | 15 h | resolved |
| [Issues with Account Balance Reflection for a Subset of Customers](https://rewindex.com/company/twilio/incidents/vlyr5lntkmdf.md) | minor | 2021-04-20 14:45 UTC | 2021-04-21 15:33 UTC | 25 h | resolved |
| [Issues when Adding or Changing a new Proxy Plan for a Subset of Customers](https://rewindex.com/company/twilio/incidents/3l1hpvkmx0nl.md) | minor | 2021-04-20 17:45 UTC | 2021-04-21 01:01 UTC | 7.3 h | resolved |
| [SMS Delivery Delay to Orange network in Congo Democratic Republic](https://rewindex.com/company/twilio/incidents/j03gjs61qcjr.md) | minor | 2021-04-20 19:07 UTC | 2021-04-20 23:24 UTC | 4.3 h | resolved |
| [Inbound Voice Calls to New Zealand, Missing Audio](https://rewindex.com/company/twilio/incidents/g6csbnb8t96w.md) | minor | 2021-04-21 02:14 UTC | 2021-04-21 05:11 UTC | 3.0 h | resolved |
| [SMS Delivery Failures on Canada Videotron (302-500)](https://rewindex.com/company/twilio/incidents/bm70ks2t651n.md) | minor | 2021-04-21 11:39 UTC | 2021-04-21 14:54 UTC | 3.3 h | resolved |
| [Programmable Wireless SIMs Stuck in Updating Status](https://rewindex.com/company/twilio/incidents/dg5jcxh43zsv.md) | minor | 2021-04-21 11:49 UTC | 2021-04-21 16:45 UTC | 4.9 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/n5swzh62tq73.md) | none | 2021-04-21 14:23 UTC | 2021-04-21 14:35 UTC | 12 min | resolved |
| [SMS Delivery Report Delays when Sending from Registered Sender ID to China Mobile Network in China](https://rewindex.com/company/twilio/incidents/fz8yg1zj14q7.md) | minor | 2021-04-21 15:19 UTC | 2021-04-22 04:02 UTC | 13 h | resolved |
| [Carrier Lookup Elevated Error Rate for a Subset of Customers](https://rewindex.com/company/twilio/incidents/nzmdjdwvxw75.md) | none | 2021-04-21 17:12 UTC | 2021-04-21 17:12 UTC | 0 min | resolved |
| [SMS Delivery Report Delays to Chile Entel Network](https://rewindex.com/company/twilio/incidents/4g05mh7bzl0n.md) | minor | 2021-04-21 17:36 UTC | 2021-04-21 20:21 UTC | 2.8 h | resolved |
| [Trust Hub pages for SHAKEN/STIR Trusted Calling were Unavailable](https://rewindex.com/company/twilio/incidents/g1kwsfjggptr.md) | none | 2021-04-21 19:46 UTC | 2021-04-21 20:15 UTC | 29 min | resolved |
| [Twilio's Websites for Authy.com and Twilio.org are Unavailable](https://rewindex.com/company/twilio/incidents/h2c0ddy575w8.md) | none | 2021-04-21 20:41 UTC | 2021-04-21 22:43 UTC | 2.0 h | resolved |
| [Automated Alert: Minimal Customer Impact](https://rewindex.com/company/twilio/incidents/xnty6zpy79vn.md) | none | 2021-04-21 21:47 UTC | 2021-04-21 22:10 UTC | 23 min | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/64fj1v6m1fdy.md) | none | 2021-04-21 23:23 UTC | 2021-04-21 23:59 UTC | 36 min | resolved |
| [SMS Delivery Delays for Registered Sender ID Messages to China - Multiple Networks (460-00, 01, 11)](https://rewindex.com/company/twilio/incidents/fj962lnw4069.md) | none | 2021-04-22 09:52 UTC | 2021-04-22 09:52 UTC | 0 min | resolved |
| [SMS Delivery Failures on Oman Nawras Network (422-03)](https://rewindex.com/company/twilio/incidents/zdkn63rrfwfs.md) | minor | 2021-04-22 10:56 UTC | 2021-04-22 13:25 UTC | 2.5 h | resolved |
| [Increase in the Number of Completed Tasks Returned from the Public API for a Subset of Customers](https://rewindex.com/company/twilio/incidents/v2tyrghgxdw4.md) | minor | 2021-04-22 13:18 UTC | 2021-04-23 17:15 UTC | 28 h | resolved |
| [Latency of Message Delivery on WhatsApp Channel for a Subset of Customers](https://rewindex.com/company/twilio/incidents/05bj8c7qhcpq.md) | minor | 2021-04-22 13:24 UTC | 2021-04-22 21:40 UTC | 8.3 h | resolved |
| [Issue when Creating new Flex Accounts](https://rewindex.com/company/twilio/incidents/9qp2bxw0swlm.md) | none | 2021-04-22 18:34 UTC | 2021-04-22 19:12 UTC | 38 min | resolved |
| [Issue with Accessing the Dialogflow Configuration Pages](https://rewindex.com/company/twilio/incidents/cwxckf8wms9h.md) | minor | 2021-04-22 18:45 UTC | 2021-04-22 20:21 UTC | 1.6 h | resolved |
| [Super SIM Network Connectivity Issues](https://rewindex.com/company/twilio/incidents/ktkmtqmnmj5p.md) | minor | 2021-04-23 04:58 UTC | 2021-04-24 01:25 UTC | 20 h | resolved |
| [Degraded Functionality of Flex Insights Provisioning](https://rewindex.com/company/twilio/incidents/dgflb6jgpdqb.md) | none | 2021-04-23 14:19 UTC | 2021-04-23 14:19 UTC | 0 min | resolved |
| [Issue with a Subset of New Customers Registering for WhatsApp](https://rewindex.com/company/twilio/incidents/lxmkcsg8l7mv.md) | none | 2021-04-23 21:12 UTC | 2021-04-23 22:38 UTC | 1.4 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/jfb3vq3ctj7d.md) | minor | 2021-04-24 18:07 UTC | 2021-04-24 19:08 UTC | 1.0 h | resolved |
| [SMS DLR Delays to Egypt Networks](https://rewindex.com/company/twilio/incidents/k1l57nkxkz4l.md) | none | 2021-04-25 11:29 UTC | 2021-04-25 11:29 UTC | 0 min | resolved |
| [SMS Delivery Delays to Orange Network in Israel](https://rewindex.com/company/twilio/incidents/dgq7k7bl4s2h.md) | minor | 2021-04-25 17:45 UTC | 2021-04-26 23:25 UTC | 30 h | resolved |
| [Connection Failure for Registered Sender ID Messages to China over Multiple Networks (460-000, 460-001, 460-011)](https://rewindex.com/company/twilio/incidents/w3zf14g60vq8.md) | minor | 2021-04-25 19:22 UTC | 2021-04-26 04:00 UTC | 8.6 h | resolved |
| [MMS Delivery Delays on US T-mobile From a Subset of Shortcodes](https://rewindex.com/company/twilio/incidents/dq4d0m12m12f.md) | minor | 2021-04-26 03:11 UTC | 2021-04-26 09:43 UTC | 6.5 h | resolved |
| [SMS Delivery Delays to MTS Network in Belarus](https://rewindex.com/company/twilio/incidents/8ntm5t0qgj79.md) | minor | 2021-04-26 12:10 UTC | 2021-04-26 20:56 UTC | 8.8 h | resolved |
| [Packet Loss Causing Dropped Calls for a Subset of Customers](https://rewindex.com/company/twilio/incidents/xc9tgx3m7wr9.md) | none | 2021-04-26 15:12 UTC | 2021-04-26 15:12 UTC | 0 min | resolved |
| [Outbound SMS Delivery Delay to Jazz (Mobilink and Warid Telecom) Network in Pakistan](https://rewindex.com/company/twilio/incidents/34bgsj6kfs9n.md) | minor | 2021-04-26 20:47 UTC | 2021-04-27 01:18 UTC | 4.5 h | resolved |
| [Inbound Call Failures to Twilio Colombia (Bogota D.C) Phone Numbers](https://rewindex.com/company/twilio/incidents/vlvxz2h2brw9.md) | minor | 2021-04-27 02:51 UTC | 2021-04-27 05:06 UTC | 2.3 h | resolved |
| [Authy/Verify SMS Delivery Delays to Multiple Destinations](https://rewindex.com/company/twilio/incidents/tzkygn5mxfvk.md) | minor | 2021-04-27 15:25 UTC | 2021-04-27 20:13 UTC | 4.8 h | resolved |
| [Inbound/Outbound SMS Failures to a Subset of Twilio Canadian Short Codes](https://rewindex.com/company/twilio/incidents/f93jnfszxr5f.md) | minor | 2021-04-28 06:21 UTC | 2021-04-28 10:50 UTC | 4.5 h | resolved |
| [Flex Channel Orchestration 500's Due To Downstream Errors](https://rewindex.com/company/twilio/incidents/kqg46zp7vzj4.md) | none | 2021-04-28 10:02 UTC | 2021-04-28 10:02 UTC | 0 min | resolved |
| [Programmable Messaging Logs Delayed](https://rewindex.com/company/twilio/incidents/4pxpbjv14qd1.md) | minor | 2021-04-29 14:44 UTC | 2021-04-30 01:18 UTC | 11 h | resolved |
| [Call Failures to Twilio Indonesia Phone Numbers](https://rewindex.com/company/twilio/incidents/kxg02kp0hg42.md) | minor | 2021-04-29 18:36 UTC | 2021-04-29 22:17 UTC | 3.7 h | resolved |
| [SMS Delivery Delays to Verizon Network](https://rewindex.com/company/twilio/incidents/cxkm6mbwjtxg.md) | minor | 2021-04-29 19:05 UTC | 2021-04-29 21:38 UTC | 2.5 h | resolved |
| [SMS Delivery Failures on a Subset of Shortcodes](https://rewindex.com/company/twilio/incidents/s2gkwdcwp06n.md) | none | 2021-04-30 06:42 UTC | 2021-04-30 06:42 UTC | 0 min | resolved |
| [On Call Engineers are Investigating SMS Delivery Delays From a Subset of Shortcodes](https://rewindex.com/company/twilio/incidents/jbs6hdj16h71.md) | none | 2021-04-30 16:36 UTC | 2021-04-30 17:01 UTC | 25 min | resolved |
| [Our Engineers are Reporting a Retroactive Issue with German Translated Forms Hosted on Twilio](https://rewindex.com/company/twilio/incidents/11zxxvyj5p38.md) | none | 2021-04-30 19:23 UTC | 2021-04-30 19:23 UTC | 0 min | resolved |
| [SMS Delivery Failure From a Subset of Short codes to Puerto Rico Numbers](https://rewindex.com/company/twilio/incidents/p27w8ydqqgkd.md) | minor | 2021-04-30 20:51 UTC | 2021-05-01 03:15 UTC | 6.4 h | resolved |
| [SMS Delivery Delays to Netherlands T-Mobile](https://rewindex.com/company/twilio/incidents/zn2x39lx951g.md) | minor | 2021-04-30 22:13 UTC | 2021-05-01 14:09 UTC | 16 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Altel](https://rewindex.com/company/twilio/incidents/fvqtzfl07hq0.md) | maintenance | 2021-04-01 20:00 UTC | 2021-04-01 23:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/f5yn9c2cj8fm.md) | maintenance | 2021-04-01 20:00 UTC | 2021-04-01 23:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] T-Mobile SIM Updates](https://rewindex.com/company/twilio/incidents/cjmqtxt5qv3x.md) | maintenance | 2021-04-04 08:02 UTC | 2021-04-04 10:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/4drvxnpy2nv8.md) | maintenance | 2021-04-05 20:00 UTC | 2021-04-06 00:01 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russian Federation SMS Carrier Maintenance - Tele2 Russian Federation](https://rewindex.com/company/twilio/incidents/zjgp814p03bq.md) | maintenance | 2021-04-05 20:00 UTC | 2021-04-06 00:01 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russian Federation SMS Carrier Maintenance - Beeline Russian Federation](https://rewindex.com/company/twilio/incidents/qtcm6bm002hp.md) | maintenance | 2021-04-05 21:00 UTC | 2021-04-06 00:01 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russian Federation SMS Carrier Maintenance - MOTIV Telecom Russian Federation](https://rewindex.com/company/twilio/incidents/lr874vc95lsb.md) | maintenance | 2021-04-05 21:00 UTC | 2021-04-05 23:01 UTC | 2.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - Telcel](https://rewindex.com/company/twilio/incidents/nxc34pq25lg1.md) | maintenance | 2021-04-06 05:45 UTC | 2021-04-06 08:15 UTC | 2.5 h | resolved |
| [\[Scheduled\] Russian Federation SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/tywhy3yt522c.md) | maintenance | 2021-04-06 20:00 UTC | 2021-04-07 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] France SMS Carrier Maintenance - Legos](https://rewindex.com/company/twilio/incidents/mw84r3khd9v9.md) | maintenance | 2021-04-06 20:30 UTC | 2021-04-06 23:00 UTC | 2.5 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/n12xy4dyz6m4.md) | maintenance | 2021-04-07 03:00 UTC | 2021-04-07 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/rk8ld2vnv71f.md) | maintenance | 2021-04-07 20:01 UTC | 2021-04-08 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] United Kingdom SMS Carrier Maintenance - 3 (Hutchison 3G UK Ltd) United Kingdom](https://rewindex.com/company/twilio/incidents/8d84tfjvsx9g.md) | maintenance | 2021-04-07 21:00 UTC | 2021-04-08 06:00 UTC | 9.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/zcm6c9yr1v5s.md) | maintenance | 2021-04-08 03:01 UTC | 2021-04-08 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - USA and CA](https://rewindex.com/company/twilio/incidents/dychvmn8pqwx.md) | maintenance | 2021-04-08 03:01 UTC | 2021-04-08 07:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/vl9ljbm3z6v9.md) | maintenance | 2021-04-08 03:01 UTC | 2021-04-08 07:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/gmtysxjqyf74.md) | maintenance | 2021-04-08 05:00 UTC | 2021-04-08 12:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/pbkz9m0hmnlb.md) | maintenance | 2021-04-08 05:01 UTC | 2021-04-08 10:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Altel Kazakhstan](https://rewindex.com/company/twilio/incidents/xbhbwgncvfnt.md) | maintenance | 2021-04-11 19:00 UTC | 2021-04-12 00:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Tele2 Kazakhstan](https://rewindex.com/company/twilio/incidents/yplt95xh1cv8.md) | maintenance | 2021-04-11 19:00 UTC | 2021-04-12 00:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] United Kingdom SMS Carrier Maintenance - Jersey Telecom United Kingdom](https://rewindex.com/company/twilio/incidents/p6k27f2knprj.md) | maintenance | 2021-04-12 01:00 UTC | 2021-04-12 05:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/3r4p3ttb51cy.md) | maintenance | 2021-04-12 04:01 UTC | 2021-04-12 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - AT&T](https://rewindex.com/company/twilio/incidents/5lvfn4m089fb.md) | maintenance | 2021-04-12 05:00 UTC | 2021-04-12 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - All Airtel Networks](https://rewindex.com/company/twilio/incidents/qmnw6k9zs8qx.md) | maintenance | 2021-04-12 18:30 UTC | 2021-04-13 00:30 UTC | 6.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/r8093klz44dc.md) | maintenance | 2021-04-12 20:00 UTC | 2021-04-13 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/g2g53rst3q7h.md) | maintenance | 2021-04-13 04:01 UTC | 2021-04-13 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - Sprint US](https://rewindex.com/company/twilio/incidents/7v7dlyhss627.md) | maintenance | 2021-04-14 04:00 UTC | 2021-04-14 13:00 UTC | 9.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/8qxcxgspw66k.md) | maintenance | 2021-04-14 20:01 UTC | 2021-04-15 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/6h2r8jt6z4pl.md) | maintenance | 2021-04-15 03:01 UTC | 2021-04-15 07:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/3z68mcq51n2s.md) | maintenance | 2021-04-15 06:00 UTC | 2021-04-15 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/9qxrst0cw0g6.md) | maintenance | 2021-04-15 06:00 UTC | 2021-04-15 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - All Telenor Networks](https://rewindex.com/company/twilio/incidents/x9bzk8jgzsfs.md) | maintenance | 2021-04-15 22:00 UTC | 2021-04-16 04:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/g2hhp56wlf2y.md) | maintenance | 2021-04-16 22:00 UTC | 2021-04-17 03:00 UTC | 5.0 h | resolved |
| [MMS Delivery Delays to US T-Mobile for a Subset of Shortcodes](https://rewindex.com/company/twilio/incidents/97wys8wqdvj6.md) | maintenance | 2021-04-16 22:01 UTC | 2021-04-17 02:12 UTC | 4.2 h | resolved |
| [\[Scheduled\] United Kingdom SMS Carrier Maintenance - Jersey Telecom United Kingdom](https://rewindex.com/company/twilio/incidents/7vx627pz3g63.md) | maintenance | 2021-04-19 01:00 UTC | 2021-04-19 05:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - T-Mobile](https://rewindex.com/company/twilio/incidents/twrsns878chz.md) | maintenance | 2021-04-19 05:01 UTC | 2021-04-19 10:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/2p9tgldtfkbc.md) | maintenance | 2021-04-19 20:00 UTC | 2021-04-20 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russian Federation SMS Carrier Maintenance - Tele2 Russian Federation](https://rewindex.com/company/twilio/incidents/tg8lsgch0d4g.md) | maintenance | 2021-04-20 20:01 UTC | 2021-04-21 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - Telefonica Moviles (Movistar)](https://rewindex.com/company/twilio/incidents/jyh3nhv1chrk.md) | maintenance | 2021-04-21 04:00 UTC | 2021-04-21 08:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/zsv68f3nx0jx.md) | maintenance | 2021-04-21 20:00 UTC | 2021-04-22 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russian Federation SMS Carrier Maintenance - Tele2 Russian Federation](https://rewindex.com/company/twilio/incidents/x6tj26sfsl93.md) | maintenance | 2021-04-21 21:00 UTC | 2021-04-22 05:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] US/CA SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/5s8r4qm47v7g.md) | maintenance | 2021-04-22 02:00 UTC | 2021-04-22 05:59 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/nktptx4j18w0.md) | maintenance | 2021-04-22 03:00 UTC | 2021-04-22 07:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - Tune Talk, Malaysia](https://rewindex.com/company/twilio/incidents/31jskqqpnv23.md) | maintenance | 2021-04-22 16:00 UTC | 2021-04-22 17:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] Programmable Wireless SIM Updates](https://rewindex.com/company/twilio/incidents/sb7z9qhjj0n7.md) | maintenance | 2021-04-22 20:00 UTC | 2021-04-23 01:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/91mv6nrg990l.md) | maintenance | 2021-04-23 03:00 UTC | 2021-04-23 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/91wjbq6vjzt7.md) | maintenance | 2021-04-23 03:00 UTC | 2021-04-23 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/g75x58llf8k8.md) | maintenance | 2021-04-23 04:00 UTC | 2021-04-23 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Programmable Wireless SIM Updates](https://rewindex.com/company/twilio/incidents/ng3yk39xywbd.md) | maintenance | 2021-04-25 08:00 UTC | 2021-04-25 10:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Altel Kazakhstan](https://rewindex.com/company/twilio/incidents/vsqkbv9fwrk9.md) | maintenance | 2021-04-25 19:00 UTC | 2021-04-26 00:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Kazakhstan SMS Carrier Maintenance - Tele2 Kazakhstan](https://rewindex.com/company/twilio/incidents/ssv4f4mxg8qw.md) | maintenance | 2021-04-25 19:00 UTC | 2021-04-26 00:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] France SMS Carrier Maintenance - Bouygues Telecom](https://rewindex.com/company/twilio/incidents/pqwh63l8kj37.md) | maintenance | 2021-04-25 22:01 UTC | 2021-04-26 05:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - C3NTRO Telecom](https://rewindex.com/company/twilio/incidents/hcflzctq4y5r.md) | maintenance | 2021-04-26 03:01 UTC | 2021-04-26 03:15 UTC | 14 min | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/zg6xlzc1x7r0.md) | maintenance | 2021-04-26 03:01 UTC | 2021-04-26 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/8307ggzvwplz.md) | maintenance | 2021-04-26 03:01 UTC | 2021-04-26 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - AT&T US](https://rewindex.com/company/twilio/incidents/pm3l880b0k6p.md) | maintenance | 2021-04-26 04:00 UTC | 2021-04-26 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/4z22c4ztnzn4.md) | maintenance | 2021-04-26 19:30 UTC | 2021-04-27 03:30 UTC | 8.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/mlsdx1hwr0dn.md) | maintenance | 2021-04-26 20:01 UTC | 2021-04-27 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russian Federation SMS Carrier Maintenance - Beeline(VimpelCom) Russian Federation](https://rewindex.com/company/twilio/incidents/3bw074d8czj2.md) | maintenance | 2021-04-26 21:00 UTC | 2021-04-27 00:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/lsvwryvmycdn.md) | maintenance | 2021-04-27 19:00 UTC | 2021-04-27 23:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/q02j3vqvpg7n.md) | maintenance | 2021-04-28 04:00 UTC | 2021-04-28 10:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Mexico SMS Carrier Maintenance - AT&T Mexico](https://rewindex.com/company/twilio/incidents/41lqncpbrl3c.md) | maintenance | 2021-04-28 04:00 UTC | 2021-04-28 10:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Tele2](https://rewindex.com/company/twilio/incidents/3yrb9xcwhl0g.md) | maintenance | 2021-04-28 19:00 UTC | 2021-04-28 23:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/skn46nnr7jlj.md) | maintenance | 2021-04-28 20:00 UTC | 2021-04-29 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Beeline(VimpelCom)](https://rewindex.com/company/twilio/incidents/kw6b8td28qm2.md) | maintenance | 2021-04-28 21:00 UTC | 2021-04-29 00:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/gd2sf7j1q6xr.md) | maintenance | 2021-04-29 03:00 UTC | 2021-04-29 07:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/8ylcy4r4mbvv.md) | maintenance | 2021-04-29 04:00 UTC | 2021-04-29 11:00 UTC | 7.0 h | resolved |

## Cite this

Twilio posted 106 status incidents in April 2021 (0 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/twilio/2021/04
- Citation: Twilio, “Twilio in April 2021” (2021-04-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/2021/04 (CC BY 4.0).
- Markdown link: `[Twilio: Twilio in April 2021 (2021-04-01)](https://rewindex.com/company/twilio/2021/04)`


---
Canonical: https://rewindex.com/company/twilio/2021/04 · Markdown: https://rewindex.com/company/twilio/2021/04.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T14:50:23.317Z