Possible BGP hijack

Beginning at 2022-11-02 08:51:40, we detected a possible BGP hijack.

Prefix 31.3.208.0/20, Normally announced by AS25577 C4L-AS, GB

Starting at 2022-11-02 08:51:40, a more specific route (31.3.223.0/24) was announced by ASN 3356.

This was detected by 75 BGPMon peers.

Expected
Start time: 2022-11-02 08:51:40 UTC
Expected prefix: 31.3.208.0/20
Expected ASN: 25577 (C4L-AS, GB)
Event Details
Detected advertisement: 31.3.223.0/24
Detected Origin ASN 3356 (LEVEL3, US)
Detected AS Path 200155 39392 1299 3356
Detected by number of BGPMon peers: 75

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