Outage in Twilio

SMS Delivery Delays to Cellular NE Arizona Network in US via a Subset of Short Codes

Resolved Minor

December 11, 2025 - Started 4 months ago - Lasted about 9 hours
Official incident page

Incident Report

Our monitoring systems have detected a potential issue SMS delivery delays to Cellular NE Arizona network in US. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.

Components affected

Twilio SMS Short Code, North America

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Latest Updates ( sorted recent to last )

RESOLVED 4 months ago - at 12/11/2025 09:01AM

This incident has been resolved.

MONITORING 4 months ago - at 12/11/2025 06:57AM

We are observing recovery in SMS delivery delays to Cellular NE Arizona network in US via a subset of short codes. We will continue to monitor to ensure full service recovery. We expect to provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING 4 months ago - at 12/11/2025 03:20AM

We are experiencing SMS delivery delays to Cellular NE Arizona network in US via a subset of short codes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

INVESTIGATING 4 months ago - at 12/11/2025 01:23AM

We are experiencing SMS delivery delays to Cellular NE Arizona network in US via a subset of Short Codes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING 4 months ago - at 12/11/2025 12:24AM

We are experiencing SMS delivery delays to Cellular NE Arizona network in US via a subset of Short Codes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

INVESTIGATING 4 months ago - at 12/11/2025 12:11AM

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