# Twilio: SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender Type to Jazz Pakistan

- Impact (vendor’s label): minor
- Status: resolved · edited after publishing
- Started: 2026-10-21 16:42 UTC · Resolved: 2026-10-21 22:43 UTC · Duration: 6.0 h
- Updates: 6 · Affected components: CARRIER NETWORK - SMS, APAC, SMS, APAC
- [Vendor status page: https://stspg.io/d8km5rfd3wbx](https://stspg.io/d8km5rfd3wbx)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **investigating** 2026-10-21 16:42 UTC: Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- **identified** 2026-10-21 16:49 UTC: Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
- **identified** 2026-10-21 17:58 UTC: Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
- **identified** 2026-10-21 19:59 UTC: Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
- **monitoring** 2026-10-21 21:06 UTC: We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender Type to Jazz network subscribers in Pakistan and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- **resolved** 2026-10-21 22:43 UTC: The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender Type to Jazz network subscribers in Pakistan is operating normally.

## Rewindex changes for this incident

- 2026-10-21 16:53 UTC: [Incident updated: SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender IDs to Jazz Pakistan](https://rewindex.com/change/rfbc4473af91850.md)
- 2026-10-21 18:03 UTC: [Incident updated: SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender IDs to Jazz Pakistan](https://rewindex.com/change/r7534ea533de128.md)
- 2026-10-21 20:03 UTC: [Incident updated: SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender IDs to Jazz Pakistan](https://rewindex.com/change/r01d52d3249cc21.md)
- 2026-10-21 21:13 UTC: [Incident updated: SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender Type to Jazz Pakistan](https://rewindex.com/change/rc2673e0419823c.md)
- 2026-10-21 22:53 UTC: [Incident updated: SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender Type to Jazz Pakistan](https://rewindex.com/change/r6783e34b42598a.md)


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Canonical: https://rewindex.com/company/twilio/incidents/y0t9h120wvwv · Markdown: https://rewindex.com/company/twilio/incidents/y0t9h120wvwv.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/y0t9h120wvwv · Generated 2026-10-21T23:44:08.125Z