Possible BGP hijack

Beginning at 2023-12-18 09:45:24 UTC, we detected a possible BGP hijack.

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

But beginning at 2023-12-18 09:45:24, the same prefix ( was also announced by ASN 209945.

This was detected by 2 BGPMon peers.

Start time: 2023-12-18 09:45:24 UTC
Expected prefix:
Expected ASN: 7018 (ATT-INTERNET4, US)
Event Details
Detected advertisement:
Detected Origin ASN 209945 (VIASAT, MD)
Detected AS Path 29396 3257 174 35346 209945
Detected by number of BGPMon peers: 2

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