Possible BGP hijack

Beginning at 2021-03-04 19:17:33, we detected a possible BGP hijack.

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

Starting at 2021-03-04 19:17:33, a more specific route (205.164.88.0/21) was announced by ASN 264275.

This was detected by 114 BGPMon peers.

Expected
Start time: 2021-03-04 19:17:33 UTC
Expected prefix: 205.164.64.0/18
Expected ASN: 174 (COGENT-174, US)
Event Details
Detected advertisement: 205.164.88.0/21
Detected Origin ASN 264275 (ROLIM NET TECNOLOGIA LTDA, BR)
Detected AS Path 39489 21021 29314 3356 3549 262596 61884 266284 266284 264275
Detected by number of BGPMon peers: 114

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