Possible BGP hijack

Beginning at 2023-12-07 13:29:56 UTC, we detected a possible BGP hijack.

Prefix 131.255.139.0/24, is normally announced by AS3549 LVLT-3549, US.

But beginning at 2023-12-07 13:29:56, the same prefix (131.255.139.0/24) was also announced by ASN 271861.

This was detected by 4 BGPMon peers.

Expected
Start time: 2023-12-07 13:29:56 UTC
Expected prefix: 131.255.139.0/24
Expected ASN: 3549 (LVLT-3549, US)
Event Details
Detected advertisement: 131.255.139.0/24
Detected Origin ASN 271861 ()
Detected AS Path 27257 174 271861
Detected by number of BGPMon peers: 4

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