# SMS Delivery Delays From a Subset of Twilio Registered Sender IDs to Telenor Serbia

- Provider: [Twilio](https://down.guide/twilio)
- Level: confirmed
- Impact: Degraded
- lasted 2h 35m
- started 2026-03-13 11:20 UTC
- SMS, Europe
- eu
- id: DWN-5b23196f06
- Official page: https://stspg.io/q9qggyng5w5n

## Updates from Twilio
### 2026-03-13 11:20 UTC: investigating
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Registered Sender IDs to Telenor network subscribers in Serbia. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

### 2026-03-13 12:05 UTC: monitoring
We are observing recovery in SMS delivery delays when sending messages from a subset of Twilio Registered Sender IDs to Telenor network subscribers in Serbia. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

### 2026-03-13 13:55 UTC: resolved
We are no longer experiencing MMS/SMS delivery delays when sending messages from a subset of Twilio Registered Sender IDs to Telenor network subscribers in Serbia. This incident has been resolved.

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