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minor✓ Resolved

SMS Delivery Receipt Delays from a Subset of Twilio Long Codes to Chunghwa Taiwan

TwilioFri, Jul 17, 2026, 02:10 PM
Status
resolved
Duration
2d 10h
Updates
8
Coverage
0 articles

INCIDENT TIMELINE

✓ ResolvedMon, Jul 20, 2026, 12:30 AM
This incident has been resolved.
monitoringMon, Jul 20, 2026, 12:24 AM
We have observed a recovery in SMS delivery receipts from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
identifiedSun, Jul 19, 2026, 09:29 PM
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 24 hours or as soon as more information becomes available.
identifiedSat, Jul 18, 2026, 09:24 PM
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 24 hours or as soon as more information becomes available.
identifiedSat, Jul 18, 2026, 05:18 AM
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 16 hours or as soon as more information becomes available.
identifiedFri, Jul 17, 2026, 09:17 PM
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 8 hours or as soon as more information becomes available.
identifiedFri, Jul 17, 2026, 05:12 PM
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 4 hours or as soon as more information becomes available.
identifiedFri, Jul 17, 2026, 03:10 PM
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 2 hours or as soon as more information becomes available.
identifiedFri, Jul 17, 2026, 02:10 PM
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to Chunghwa network subscribers in Taiwan. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.

📊 TECHNICAL DETAILS

Internal ID
447f25fa-c36d-4e7c-9bad-d95087bcc8fd
External ID
7x7jhgblkjp9
🕐 Started
Fri, Jul 17, 2026, 02:10 PM
🔄 Last Updated
Mon, Jul 20, 2026, 12:30 AM
✓ Resolved
Mon, Jul 20, 2026, 12:30 AM
MINOR
Impact Level
2d 10h
Total Duration
8
Status Updates
Affected Components
SMS, APAC
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