Twilio incident
SMS Delivery Delays from a Subset of Twilio Alphanumeric Sender IDs and Long Codes to MTN Zambia
Twilio experienced a minor incident on August 3, 2026 affecting SMS, Middle East & Africa, lasting 10h 20m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Aug 03, 2026, 06:52 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Alphanumeric and Long Codes to MTN network subscribers in Zambia. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- identified Aug 03, 2026, 06:53 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Alphanumeric and Long Codes to MTN network subscribers in Zambia. 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 Aug 03, 2026, 07:54 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Alphanumeric Sender IDs and Long Codes to MTN network subscribers in Zambia. 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 Aug 03, 2026, 09:54 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Alphanumeric and Long Codes to MTN network subscribers in Zambia. 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 Aug 03, 2026, 11:03 PM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to MTN network subscribers in Zambia and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- monitoring Aug 04, 2026, 01:03 AM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric and Long Codes to MTN network subscribers in Zambia and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
- monitoring Aug 04, 2026, 05:04 AM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric and Long Codes to MTN network subscribers in Zambia and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
- resolved Aug 04, 2026, 05:13 AM UTC
The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to MTN network subscribers in Zambia is operating normally.