Possible BGP hijack

Beginning at 2022-04-13 13:40:31 UTC, we detected a possible BGP hijack.

Prefix 2.57.232.0/23, is normally announced by AS209811 INTRANET-AS, US.

But beginning at 2022-04-13 13:40:31, the same prefix (2.57.232.0/23) was also announced by ASN 38987.

This was detected by 3 BGPMon peers.

Expected
Start time: 2022-04-13 13:40:31 UTC
Expected prefix: 2.57.232.0/23
Expected ASN: 209811 (INTRANET-AS, US)
Event Details
Detected advertisement: 2.57.232.0/23
Detected Origin ASN 38987 (OST-AS, PL)
Detected AS Path 205206 33891 20804 38987 38987 38987
Detected by number of BGPMon peers: 3

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