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SendGrid: SMS Delivery Delays and Failures from a Subset of Twilio Alphanumeric Sender IDs and Long Codes to Multiple Networks in Czech Republic

Affected components: CARRIER NETWORK - SMS, EuropeSMS, Europe

Timeline of updates

1. investigating2026-10-16 17:16 UTC

   Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes and Alphanumeric Sender IDs to network subscribers on multiple networks in the Czech Republic. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

2. identified2026-10-16 18:06 UTC

   Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes to network subscribers on multiple networks in the Czech Republic. 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.

3. identified2026-10-16 19:11 UTC

   Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs and Long Codes to network subscribers on multiple networks in the Czech Republic. 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.

4. identified2026-10-16 21:41 UTC

   Twilio customers may be experiencing SMS delivery delays and delivery failures from a subset of Twilio Alphanumeric Sender IDs and Long Codes to multiple networks in the Czech Republic. 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.

5. identified2026-10-17 01:52 UTC

   Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio alphanumeric sender IDs and long codes to network subscribers on multiple networks in the Czech Republic. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.

6. monitoring2026-10-17 06:49 UTC

   We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric and Long Codes to network subscribers on multiple networks in the Czech Republic and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

7. monitoring2026-10-17 08:56 UTC

   We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to network subscribers on multiple networks in the Czech Republic and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

8. monitoring2026-10-17 13:00 UTC

   We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to network subscribers on multiple networks in the Czech Republic and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.

9. resolved2026-10-17 13:45 UTC

   The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to affected networks in the Czech Republic is operating normally.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). SendGrid profile · Recent SendGrid incidents · Markdown · JSON