Degraded authentication on 20416 IMSI range

Incident Report for Onomondo

Resolved

Or systems indicate that all operations have returned to normal and devices should be authenticating successfully.

In case you are still having issues, please reach out to our Support Team via our Help Center.
Posted Mar 20, 2026 - 08:54 CET

Update

We are seeing that the majority of devices have recovered. We are continuing to monitor and will provide updates as they become available.
Posted Mar 20, 2026 - 08:31 CET

Monitoring

We’ve implemented changes and are now seeing a significant increase in the number of devices recovering. We are continuing to monitor to ensure full restoration.
Posted Mar 20, 2026 - 08:09 CET

Identified

Issue have been identified. Our team is working on fixing the issue.
Posted Mar 20, 2026 - 07:28 CET

Investigating

At 05:50 UTC, a subset of authentication servers (HSS/HLR) lost connectivity to the Authentication Center (AuC), causing authentication rejections. Only SIMs within the 20416 IMSI range were impacted.

We are investigating
Posted Mar 20, 2026 - 07:19 CET
This incident affected: Network and SMS.