Possible BGP hijack

Beginning at 2020-11-18 21:34:13, we detected a possible BGP hijack.

Prefix 206.84.0.0/15, Normally announced by AS174 COGENT-174, US

Starting at 2020-11-18 21:34:13, a more specific route (206.84.32.0/21) was announced by ASN 265175.

This was detected by 137 BGPMon peers.

Expected
Start time: 2020-11-18 21:34:13 UTC
Expected prefix: 206.84.0.0/15
Expected ASN: 174 (COGENT-174, US)
Event Details
Detected advertisement: 206.84.32.0/21
Detected Origin ASN 265175 (AS SISTEMAS LTDA, BR)
Detected AS Path 41405 29075 6762 26615 265175
Detected by number of BGPMon peers: 137

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