Possible BGP hijack

Beginning at 2022-01-13 09:01:22 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS3257 GTT-BACKBONE GTT, US.

But beginning at 2022-01-13 09:01:22, the same prefix ( was also announced by ASN 1136.

This was detected by 3 BGPMon peers.

Start time: 2022-01-13 09:01:22 UTC
Expected prefix:
Expected ASN: 3257 (GTT-BACKBONE GTT, US)
Event Details
Detected advertisement:
Detected Origin ASN 1136 (KPN KPN National, NL)
Detected AS Path 12859 1136
Detected by number of BGPMon peers: 3

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