Possible BGP hijack

Beginning at 2021-09-24 11:25:52, we detected a possible BGP hijack.

Prefix 205.164.64.0/18, Normally announced by AS174 COGENT-174, US

Starting at 2021-09-24 11:25:52, a more specific route (205.164.85.0/24) was announced by ASN 267941.

This was detected by 116 BGPMon peers.

Expected
Start time: 2021-09-24 11:25:52 UTC
Expected prefix: 205.164.64.0/18
Expected ASN: 174 (COGENT-174, US)
Event Details
Detected advertisement: 205.164.85.0/24
Detected Origin ASN 267941 (RENATO SENA DE OLIVEIRA ME, BR)
Detected AS Path 28300 3356 7738 8167 266475 267941 267941 267941 267941 267941 267941
Detected by number of BGPMon peers: 116

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