Possible BGP hijack

Beginning at 2023-03-08 23:14:56 UTC, we detected a possible BGP hijack.

Prefix 204.19.138.0/24, is normally announced by AS13768 COGECO-PEER1, CA.

But beginning at 2023-03-08 23:14:56, the same prefix (204.19.138.0/24) was also announced by ASN 20119.

This was detected by 63 BGPMon peers.

Expected
Start time: 2023-03-08 23:14:56 UTC
Expected prefix: 204.19.138.0/24
Expected ASN: 13768 (COGECO-PEER1, CA)
Event Details
Detected advertisement: 204.19.138.0/24
Detected Origin ASN 20119 (ARROW, CA)
Detected AS Path 7018 6461 20119
Detected by number of BGPMon peers: 63

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