Possible BGP hijack

Beginning at 2023-03-25 03:37:02 UTC, we detected a possible BGP hijack.

Prefix 177.86.58.0/24, is normally announced by AS52567 NEXNET FIBRA, BR.

But beginning at 2023-03-25 03:37:02, the same prefix (177.86.58.0/24) was also announced by ASN 6453.

This was detected by 8 BGPMon peers.

Expected
Start time: 2023-03-25 03:37:02 UTC
Expected prefix: 177.86.58.0/24
Expected ASN: 52567 (NEXNET FIBRA, BR)
Event Details
Detected advertisement: 177.86.58.0/24
Detected Origin ASN 6453 (AS6453, US)
Detected AS Path 49673 12389 1273 6453
Detected by number of BGPMon peers: 8

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