Possible BGP hijack

Beginning at 2021-12-10 13:23:14 UTC, we detected a possible BGP hijack.

Prefix 200.39.54.0/24, is normally announced by AS271419 S.F. GOMES TELECOMUNICACOES, BR.

But beginning at 2021-12-10 13:23:14, the same prefix (200.39.54.0/24) was also announced by ASN 272472.

This was detected by 73 BGPMon peers.

Expected
Start time: 2021-12-10 13:23:14 UTC
Expected prefix: 200.39.54.0/24
Expected ASN: 271419 (S.F. GOMES TELECOMUNICACOES, BR)
Event Details
Detected advertisement: 200.39.54.0/24
Detected Origin ASN 272472 ()
Detected AS Path 38987 5617 5511 3257 52320 264144 264144 264144 264144 264144 264144 264144 264144 264144 264144 272472
Detected by number of BGPMon peers: 73

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