Possible BGP hijack

Beginning at 2022-08-04 11:56:50, we detected a possible BGP hijack.

Prefix 204.217.0.0/16, Normally announced by AS174 COGENT-174, US

Starting at 2022-08-04 11:56:50, a more specific route (204.217.133.0/24) was announced by ASN 136988.

This was detected by 4 BGPMon peers.

Expected
Start time: 2022-08-04 11:56:50 UTC
Expected prefix: 204.217.0.0/16
Expected ASN: 174 (COGENT-174, US)
Event Details
Detected advertisement: 204.217.133.0/24
Detected Origin ASN 136988 (LEASEWEB-AS-AP LEASEWEB AUSTRALIA PTY LIMITED, AU)
Detected AS Path 49463 13193 13193 13193 13193 13193 13193 13193 34659 35280 16265 136988
Detected by number of BGPMon peers: 4

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