Possible BGP hijack

Beginning at 2023-09-21 03:16:05, we detected a possible BGP hijack.

Prefix 131.100.166.0/23, Normally announced by AS61642 NEXNETT Brasil Telecom, BR

Starting at 2023-09-21 03:16:05, a more specific route (131.100.167.0/24) was announced by ASN 203.

This was detected by 48 BGPMon peers.

Expected
Start time: 2023-09-21 03:16:05 UTC
Expected prefix: 131.100.166.0/23
Expected ASN: 61642 (NEXNETT Brasil Telecom, BR)
Event Details
Detected advertisement: 131.100.167.0/24
Detected Origin ASN 203 (CENTURYLINK-LEGACY-LVLT-203, US)
Detected AS Path 63956 1221 3356 203
Detected by number of BGPMon peers: 48

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