What visitors reported during this incident

No visitor reports were filed for this incident.

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Affected services

SMS Short Code, North America

Updates (6)

Oct 22, 2026, 10:57 AM
SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United States
The incident has been resolved and SMS delivery from a subset of Twilio Short Codes to Cellularone NE Arizona network subscribers in the United States is operating normally.
SendGrid ↗
Oct 22, 2026, 02:25 AM
SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United States
We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Cellularone network subscribers in the United States and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
SendGrid ↗
Oct 21, 2026, 10:20 PM
SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United States
We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Cellularone network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
SendGrid ↗
Oct 21, 2026, 08:19 PM
SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United States
We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Cellularone network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
SendGrid ↗
Oct 21, 2026, 06:11 PM
SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United States
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Cellularone network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
SendGrid ↗
Oct 21, 2026, 05:10 PM
SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United States
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Cellularone network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
SendGrid ↗

What to do next

Verify your own services recovered cleanly. Some upstream outages leave queues or caches in a degraded state, run smoke tests before declaring green internally.
Save the post-mortem. Vendors usually publish a detailed RCA 1-3 days later. We'll add it to this page when it appears.
Watch the provider going forward. Follow SendGrid's status feed →

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