Possible BGP hijack

Beginning at 2022-11-17 01:12:22, we detected a possible BGP hijack.

Prefix 204.157.0.0/16, Normally announced by AS174 COGENT-174, US

Starting at 2022-11-17 01:12:22, a more specific route (204.157.233.0/24) was announced by ASN 27843.

This was detected by 75 BGPMon peers.

Expected
Start time: 2022-11-17 01:12:22 UTC
Expected prefix: 204.157.0.0/16
Expected ASN: 174 (COGENT-174, US)
Event Details
Detected advertisement: 204.157.233.0/24
Detected Origin ASN 27843 (OPTICAL TECHNOLOGIES S.A.C., PE)
Detected AS Path 52694 41095 27843
Detected by number of BGPMon peers: 75

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