# SendGrid: Silent Network Authentication (SNA) Failure Increase on Indosat in Indonesia

> Silent Network Authentication (SNA) on Indosat in Indonesia does not work. This affects the Verify Silent Network Auth component and the CARRIER NETWORK - Verify Silent Network Auth component. SendGrid has identified the cause and is working to resolve the issue.

- Provider: [SendGrid](https://outages.cc/sendgrid.md)
- Type: Incident
- State: identified
- Worst impact: Degraded performance
- Started: 2026-10-28 12:14 UTC
- Components: Verify Silent Network Auth, CARRIER NETWORK - Verify Silent Network Auth
- Official update: https://stspg.io/ztbjh512mvbc

## Updates from SendGrid

### identified, 2026-11-01 17:18 UTC

Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on Indosat in Indonesia. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.