Possible BGP hijack

Beginning at 2022-07-27 12:16:34 UTC, we detected a possible BGP hijack.

Prefix 179.63.137.0/24, is normally announced by AS271561 TECH FIBERS, BR.

But beginning at 2022-07-27 12:16:34, the same prefix (179.63.137.0/24) was also announced by ASN 270814.

This was detected by 4 BGPMon peers.

Expected
Start time: 2022-07-27 12:16:34 UTC
Expected prefix: 179.63.137.0/24
Expected ASN: 271561 (TECH FIBERS, BR)
Event Details
Detected advertisement: 179.63.137.0/24
Detected Origin ASN 270814 (ZAAZ PROVEDOR DE INTERNET E TELECOMUNICACOES LTDA, BR)
Detected AS Path 28646 53013 270814 267590 270814
Detected by number of BGPMon peers: 4

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