# Twilio in May 2019: incidents, uptime and changes

> Twilio in May 2019: 20 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/2019/05
Last updated: 2019-06-01T00:00:00Z

- Incidents posted: 20 (major/critical: 0) · Maintenance: 22
- By vendor impact label: minor 17, none 3
- Uptime (vendor-reported): 100% free of major/critical incidents, 91.22% free of any incident; outage time 0 min, incident time 2.7 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [April 2019](https://rewindex.com/company/twilio/2019/04.md) · Next: [June 2019](https://rewindex.com/company/twilio/2019/06.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 |
| --- | --- | --- | --- | --- | --- |
| [Small percentage of Hosted Flex Plugins not loading](https://rewindex.com/company/twilio/incidents/bdhfjft1snl4.md) | minor | 2019-05-02 17:41 UTC | 2019-05-02 18:40 UTC | 59 min | resolved |
| [Inbound SMS degraded towards a subset of Twilio UK numbers](https://rewindex.com/company/twilio/incidents/1m0qwm8vy9dc.md) | minor | 2019-05-03 02:50 UTC | 2019-05-03 15:49 UTC | 13 h | resolved |
| [Outbound Call Failures From Brazilian Numbers](https://rewindex.com/company/twilio/incidents/fmr823d5r7qj.md) | minor | 2019-05-07 16:38 UTC | 2019-05-07 19:32 UTC | 2.9 h | resolved |
| [SMS delivery delays to a subset of handsets in Venezuela](https://rewindex.com/company/twilio/incidents/p4lbn2np04h2.md) | minor | 2019-05-08 05:03 UTC | 2019-05-08 11:20 UTC | 6.3 h | resolved |
| [Elevated level of errors for API requests](https://rewindex.com/company/twilio/incidents/h51nfkcb2tqk.md) | minor | 2019-05-08 23:21 UTC | 2019-05-09 00:59 UTC | 1.6 h | resolved |
| [Elevated Errors Fetching Content from Some Domains](https://rewindex.com/company/twilio/incidents/z5b8xhvnvgqv.md) | none | 2019-05-09 19:56 UTC | 2019-05-09 19:56 UTC | 0 min | resolved |
| [SMS delivery delays towards Nextel Brazil](https://rewindex.com/company/twilio/incidents/6kz99803my37.md) | minor | 2019-05-10 15:27 UTC | 2019-05-10 23:04 UTC | 7.6 h | resolved |
| [SMS delivery delays towards some destinations in the Dominican Republic](https://rewindex.com/company/twilio/incidents/j8cw969bq0f6.md) | minor | 2019-05-12 07:10 UTC | 2019-05-12 09:30 UTC | 2.3 h | resolved |
| [Calls failing to some Twilio Brazilian numbers](https://rewindex.com/company/twilio/incidents/c72f1qk0dkty.md) | minor | 2019-05-17 09:00 UTC | 2019-05-17 10:22 UTC | 1.4 h | resolved |
| [SMS delivery issues from subset of Twilio US Short Codes](https://rewindex.com/company/twilio/incidents/ggc13lq4ps25.md) | minor | 2019-05-20 01:09 UTC | 2019-05-20 02:19 UTC | 1.2 h | resolved |
| [Errors Updating SIMs](https://rewindex.com/company/twilio/incidents/3v0mqw12qljd.md) | minor | 2019-05-22 19:34 UTC | 2019-05-22 19:36 UTC | 2 min | resolved |
| [Missing Historical Debugger Events](https://rewindex.com/company/twilio/incidents/r1nc4gjd5829.md) | minor | 2019-05-22 22:07 UTC | 2019-05-23 15:10 UTC | 17 h | resolved |
| [API Errors Creating Proxy Participants](https://rewindex.com/company/twilio/incidents/1sqxnb6f8b9s.md) | none | 2019-05-23 01:14 UTC | 2019-05-23 01:14 UTC | 0 min | resolved |
| [International SMS Delivery Degradation Towards Vodafone India](https://rewindex.com/company/twilio/incidents/pj06rqk67krp.md) | minor | 2019-05-23 06:25 UTC | 2019-05-23 09:51 UTC | 3.4 h | resolved |
| [Alert trigger emails and webhooks failing to send](https://rewindex.com/company/twilio/incidents/533gq16rh40z.md) | minor | 2019-05-24 20:05 UTC | 2019-05-25 01:00 UTC | 4.9 h | resolved |
| [Alert trigger emails and webhooks failing to send](https://rewindex.com/company/twilio/incidents/pn2310bv9j69.md) | minor | 2019-05-25 01:13 UTC | 2019-05-25 01:30 UTC | 17 min | resolved |
| [Character Encoding Issues on Verizon's Message+ App](https://rewindex.com/company/twilio/incidents/v8fxrg92z3j4.md) | minor | 2019-05-29 01:33 UTC | 2019-05-29 05:21 UTC | 3.8 h | resolved |
| [Inbound Call failures to a subset of Twilio Phone Numbers](https://rewindex.com/company/twilio/incidents/6g4yqtft9742.md) | none | 2019-05-29 10:22 UTC | 2019-05-29 10:22 UTC | 0 min | resolved |
| [Delays of SMS Messages sent to Sprint from Tollfree](https://rewindex.com/company/twilio/incidents/t122vlgnc10r.md) | minor | 2019-05-29 17:59 UTC | 2019-05-29 18:21 UTC | 22 min | resolved |
| [Failure when creating new Flex projects](https://rewindex.com/company/twilio/incidents/clq133jmpcjw.md) | minor | 2019-05-30 18:29 UTC | 2019-05-30 20:03 UTC | 1.6 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] US/Canada Toll-Free SMS Scheduled Maintenance - 1 May 2019 22:00 - 2 May 2019 00:00 PDT](https://rewindex.com/company/twilio/incidents/hrnyjzfcwbcg.md) | maintenance | 2019-05-02 05:00 UTC | 2019-05-02 07:01 UTC | 2.0 h | resolved |
| [\[Scheduled\] T-Mobile US SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/n61xfkmvfd6y.md) | maintenance | 2019-05-03 06:00 UTC | 2019-05-03 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] AT&T Carrier Maintenance Notice](https://rewindex.com/company/twilio/incidents/sd4zh0cmhfh6.md) | maintenance | 2019-05-08 02:00 UTC | 2019-05-08 10:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] T-Mobile US Toll-Free SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/yl7j2mjt2hcb.md) | maintenance | 2019-05-08 06:00 UTC | 2019-05-08 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] AT&T Carrier Maintenance Notice](https://rewindex.com/company/twilio/incidents/tnkkfgbx7wqs.md) | maintenance | 2019-05-09 02:00 UTC | 2019-05-09 10:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] US short code SMS carrier maintenance 9 May 2019 23:00 - 10 May 2019 03:00 PDT](https://rewindex.com/company/twilio/incidents/hycsvsm6n0l3.md) | maintenance | 2019-05-10 06:01 UTC | 2019-05-10 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] T-Mobile US - SMS Carrier Maintenance](https://rewindex.com/company/twilio/incidents/lmk24fd03msh.md) | maintenance | 2019-05-10 06:01 UTC | 2019-05-10 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Long Code SMS Carrier Maintenance towards Verizon](https://rewindex.com/company/twilio/incidents/250cv26ykmfs.md) | maintenance | 2019-05-12 03:00 UTC | 2019-05-12 11:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] Mexico phone number provider emergency maintenance - May, 12, 00:00 - 02:00 PT](https://rewindex.com/company/twilio/incidents/zlknpmvrx8qc.md) | maintenance | 2019-05-12 07:00 UTC | 2019-05-12 09:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] US Long Code SMS Carrier Maintenance towards Verizon](https://rewindex.com/company/twilio/incidents/1kdzhb4lb3jc.md) | maintenance | 2019-05-13 03:00 UTC | 2019-05-13 11:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] Mobifone Vietnam - SMS Carrier Maintenance 14 May 2019 09:00 - 14 May 2019 09:30 (PDT)](https://rewindex.com/company/twilio/incidents/cntn4dfmtb9l.md) | maintenance | 2019-05-14 16:01 UTC | 2019-05-14 16:30 UTC | 29 min | resolved |
| [\[Scheduled\] AT&T US - SMS Carrier Maintenance - 14 May 2019, 19:00 - 15 May 2019 03:00 (PDT)](https://rewindex.com/company/twilio/incidents/sgcp5wdnmyyl.md) | maintenance | 2019-05-15 02:01 UTC | 2019-05-15 10:01 UTC | 8.0 h | resolved |
| [\[Scheduled\] AT&T US - SMS Carrier Maintenance - 15 May 2019, 19:00 - 16 May 2019 03:00 (PDT)](https://rewindex.com/company/twilio/incidents/l7bsjlc82py4.md) | maintenance | 2019-05-16 02:00 UTC | 2019-05-16 10:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] US Short code SMS and MMS Carrier Partner Maintenance - 15 May 2019 23:00 - 16 May 2019 03:00 (PDT)](https://rewindex.com/company/twilio/incidents/7tr913ypzpp6.md) | maintenance | 2019-05-16 06:00 UTC | 2019-05-16 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] T-Mobile US - SMS Carrier Maintenance - 19 May 2019, 23:00 - 20 May 2019 03:00 (PDT)](https://rewindex.com/company/twilio/incidents/4rkzr4c40km0.md) | maintenance | 2019-05-20 06:00 UTC | 2019-05-20 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Cellular - SMS carrier maintenance - May 20 23:00 PDT - May 21 02:00 PDT](https://rewindex.com/company/twilio/incidents/5ztqrxy02wn5.md) | maintenance | 2019-05-21 06:01 UTC | 2019-05-21 09:01 UTC | 3.0 h | resolved |
| [\[Scheduled\] AT&T US - SMS Carrier Maintenance - 21 May 2019, 23:30 - 21 May 2019 23:35 (PDT)](https://rewindex.com/company/twilio/incidents/rdvzhdgz99t1.md) | maintenance | 2019-05-22 06:30 UTC | 2019-05-22 06:36 UTC | 6 min | resolved |
| [\[Scheduled\] Flex WFO Maintenance](https://rewindex.com/company/twilio/incidents/k62y067m59fq.md) | maintenance | 2019-05-25 08:00 UTC | 2019-05-25 09:30 UTC | 1.5 h | resolved |
| [\[Scheduled\] US/Canada Toll-Free SMS Carrier Maintenance 29 May 2019 22:00 - 30 May 2019 00:00 (PDT)](https://rewindex.com/company/twilio/incidents/m43x1lr5lvmj.md) | maintenance | 2019-05-30 05:01 UTC | 2019-05-30 07:01 UTC | 2.0 h | resolved |
| [\[Scheduled\] AT&T Mexico - SMS Carrier Maintenance - 26 May 2019, 22:00 - 27 May 2019 04:00 (PDT)](https://rewindex.com/company/twilio/incidents/l1wdzv6mb75p.md) | maintenance | 2019-05-30 05:01 UTC | 2019-05-30 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] T-Mobile US - SMS Carrier Maintenance - 31 May 2019, 00:00 - 31 May 2019 03:00 (PDT)](https://rewindex.com/company/twilio/incidents/6bwpdz7mjntc.md) | maintenance | 2019-05-31 07:00 UTC | 2019-05-31 10:01 UTC | 3.0 h | resolved |
| [\[Scheduled\] US/Canada Toll-Free SMS Carrier Maintenance 31 May 2019 11:00 - 31 May 2019 12:00 (PDT)](https://rewindex.com/company/twilio/incidents/g79td9447p9n.md) | maintenance | 2019-05-31 18:01 UTC | 2019-05-31 19:00 UTC | 59 min | resolved |

## Cite this

Twilio posted 20 status incidents in May 2019 (0 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/twilio/2019/05
- Citation: Twilio, “Twilio in May 2019” (2019-05-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/2019/05 (CC BY 4.0).
- Markdown link: `[Twilio: Twilio in May 2019 (2019-05-01)](https://rewindex.com/company/twilio/2019/05)`


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Canonical: https://rewindex.com/company/twilio/2019/05 · Markdown: https://rewindex.com/company/twilio/2019/05.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T14:51:02.408Z