Resolved network and service interruptions

Here you will find resolved network and service outages since January 2023. We archive all major outages involving more than 10,000 affected customers.

Outage (Reference)



Date & time
2nd February 2023, 11:19 - 12:39

Affected region
Nationwide (Switzerland)

Affected services
Voice calls - Fixed line & Mobile

Nature of disruption
Voice calls were not possible for some users connected via Sunrise fixed line or mobile network.

Number of affected customers
More than 10,000

Cause of disruption
Failed network change