Partial outage of outbound calls from CZ mobile numbers

Update timeline

1. identified Apr 20, 2026, 11:58 AM UTC

   Some outgoing calls (cca 10-20%) from CZ mobile numbers fail. Calls from fixed numbers are not affected. We are continuing to work on a fix for this incident..

2. monitoring Apr 20, 2026, 12:32 PM UTC

   We implemented a fix and are currently monitoring the result..

3. identified Apr 20, 2026, 03:20 PM UTC

   We are continuing to work on a fix for this incident..

4. identified Apr 21, 2026, 11:15 AM UTC

   We are continuing to work on a fix for this incident..

5. identified Apr 21, 2026, 01:01 PM UTC

   We are continuing to work on a fix for this incident..

6. resolved Apr 21, 2026, 02:58 PM UTC

   This incident has been resolved..