Possible BGP hijack

Beginning at 2023-01-11 02:23:31 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS27989 BANCOLOMBIA S.A, CO.

But beginning at 2023-01-11 02:23:31, the same prefix ( was also announced by ASN 203.

This was detected by 20 BGPMon peers.

Start time: 2023-01-11 02:23:31 UTC
Expected prefix:
Expected ASN: 27989 (BANCOLOMBIA S.A, CO)
Event Details
Detected advertisement:
Detected Origin ASN 203 (CENTURYLINK-LEGACY-LVLT-203, US)
Detected AS Path 28186 3356 203
Detected by number of BGPMon peers: 20

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