Clerk outage: SMS Delivery Issues

1. resolvedOct 29, 2026, 18:16 UTC

   The SMS delivery issue is resolved. Delivery and verification completion rates have returned to normal following our upstream provider’s switch to an alternate route.

2. monitoringOct 29, 2026, 18:05 UTC

   SMS verification completion rates have returned to normal levels following the provider’s switch to an alternate delivery route. We’re continuing to monitor delivery and verification rates.

3. investigatingOct 29, 2026, 18:00 UTC

   We’ve identified an issue with an upstream SMS provider’s delivery route to AT&T numbers. The provider is switching traffic to an alternate route. We’re monitoring delivery rates and will share updates as we learn more.

4. investigatingOct 29, 2026, 17:54 UTC

   We're continuing to investigate SMS delivery issues with an upstream vendor impacting users on AT&T.

5. investigatingOct 29, 2026, 17:46 UTC

   We’re investigating SMS delivery issues with an upstream SMS provider.

6. investigatingOct 29, 2026, 17:40 UTC

   We’re investigating SMS delivery issues affecting some users. Verification codes may be delayed or fail to arrive.

What APIStatus.watch saw

• Oct 29, 2026, 17:44 UTCoperational → partial outage
• Oct 29, 2026, 18:19 UTCpartial outage → operational

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

• dbt Cloud: dbt Wizard SQL execution failingMajor · Oct 29, 2026, 17:10 UTC
• Vimeo: Delays processing new video uploadsMajor · Oct 29, 2026, 18:03 UTC
• Akamai: Edge Delivery issues between Indonesia and SingaporeMinor · Oct 25, 2026, 13:44 UTC
• Linode: Connectivity Issue between ID-CGK (Jakarta) and SG-SIN-2 (Singapore 2)Minor · Oct 25, 2026, 13:54 UTC
• Twilio: Voice Call Failures from Twilio Phone Numbers to RomaniaMinor · Oct 26, 2026, 13:09 UTC
• Twilio: SMS Delivery Delays from a Subset of Twilio Short Codes to Docomo Pacific United StatesMinor · Oct 26, 2026, 20:57 UTC
• Twilio: SMS Delivery Delays and Failures between a Subset of Twilio Brazil Phone Numbers and Multiple Networks in BrazilMinor · Oct 26, 2026, 23:55 UTC
• Twilio: Voice Call Failures From Twilio Phone Numbers to GermanyMinor · Oct 27, 2026, 09:00 UTC
• Twilio: MMS Delivery Delays from a Subset of Twilio Long Codes to C-Spire United StatesMinor · Oct 27, 2026, 21:31 UTC
• Twilio: Silent Network Authentication (SNA) Failure Increase on Indosat in IndonesiaMinor · Oct 28, 2026, 12:14 UTC

How often does Clerk have incidents?

Clerk reported 10 incidents in the last 90 days, 1 of them major or critical. A typical incident lasted 2h 35m. See Clerk's uptime and incident history