Services unavailability experienced on 22 June 2025

On 22 June 2025, between 3:00 a.m. and 20:49, a DNS resolution issue disrupted both restena.lu and lu-cix.lu servers managed by Restena. During this time, some of the services offered by Restena couldn’t be reached by some users.

The technical malfunction could be identified as a DNSSEC issue that triggered access failure with cascading effects on various services - both Restena and LU-CIX services.

Neither information nor data has been lost during the incident and all services have now been restored.

We apologize to all our users for the inconvenience this may have caused.