Route leak on 45.11.18.0/24

Incident Report for aurologic GmbH

Resolved

We have received confirmation by the unauthorized network to have stopped announcement of 45.11.18.0/24. Therefore we're closing the same.
Posted Sep 20, 2026 - 02:19 UTC

Monitoring

We have identified a route leak originating from a third-party AS announcing 45.11.18.0/24, which caused an outage on certain routes affecting customer services within this prefix.

Several upstream networks failed to correctly filter the invalid announcement and subsequently propagated it, despite valid RPKI ROAs and RIR routing objects being in place for the covering prefix 45.11.16.0/22, authorizing announcements exclusively from AS30823.

The relevant transit networks have been contacted and requested to correct their filtering and routing policies, or to implement appropriate filtering where such controls are currently absent. Proper route filtering is a fundamental operational requirement for any transit network.

Please note that the underlying issue originated outside the aurologic network and was not caused by aurologic infrastructure.
Posted Sep 20, 2026 - 01:55 UTC
This incident affected: Network Infrastructure (Core Network).