Possible BGP hijack

Beginning at 2023-04-20 12:59:25 UTC, we detected a possible BGP hijack.

Prefix 81.31.128.0/20, is normally announced by AS43289 TRABIA, MD.

But beginning at 2023-04-20 12:59:25, the same prefix (81.31.128.0/20) was also announced by ASN 7018.

This was detected by 39 BGPMon peers.

Expected
Start time: 2023-04-20 12:59:25 UTC
Expected prefix: 81.31.128.0/20
Expected ASN: 43289 (TRABIA, MD)
Event Details
Detected advertisement: 81.31.128.0/20
Detected Origin ASN 7018 (ATT-INTERNET4, US)
Detected AS Path 63956 6762 7018
Detected by number of BGPMon peers: 39

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