Possible BGP hijack

Beginning at 2023-09-28 13:43:33 UTC, we detected a possible BGP hijack.

Prefix 168.121.159.0/24, is normally announced by AS203 CENTURYLINK-LEGACY-LVLT-203, US.

But beginning at 2023-09-28 13:43:33, the same prefix (168.121.159.0/24) was also announced by ASN 263421.

This was detected by 19 BGPMon peers.

Expected
Start time: 2023-09-28 13:43:33 UTC
Expected prefix: 168.121.159.0/24
Expected ASN: 203 (CENTURYLINK-LEGACY-LVLT-203, US)
Event Details
Detected advertisement: 168.121.159.0/24
Detected Origin ASN 263421 (NR Conexoes Que Fortalecem, BR)
Detected AS Path 28300 52873 7738 16735 263421
Detected by number of BGPMon peers: 19

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