Possible BGP hijack

Beginning at 2021-10-25 09:52:10, we detected a possible BGP hijack.

Prefix 154.40.0.0/13, Normally announced by AS174 COGENT-174, US

Starting at 2021-10-25 09:52:10, a more specific route (154.46.120.0/21) was announced by ASN 212046.

This was detected by 3 BGPMon peers.

Expected
Start time: 2021-10-25 09:52:10 UTC
Expected prefix: 154.40.0.0/13
Expected ASN: 174 (COGENT-174, US)
Event Details
Detected advertisement: 154.46.120.0/21
Detected Origin ASN 212046 (MEZON-, LT)
Detected AS Path 51514 8455 13194 212046
Detected by number of BGPMon peers: 3

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