Possible BGP hijack

Beginning at 2023-09-11 14:55:44 UTC, we detected a possible BGP hijack.

Prefix 109.172.92.0/22, is normally announced by AS7018 ATT-INTERNET4, US.

But beginning at 2023-09-11 14:55:44, the same prefix (109.172.92.0/22) was also announced by ASN 210457.

This was detected by 21 BGPMon peers.

Expected
Start time: 2023-09-11 14:55:44 UTC
Expected prefix: 109.172.92.0/22
Expected ASN: 7018 (ATT-INTERNET4, US)
Event Details
Detected advertisement: 109.172.92.0/22
Detected Origin ASN 210457 ()
Detected AS Path 48200 6762 31133 13259 57120 57120 207967 210457
Detected by number of BGPMon peers: 21

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