Possible BGP hijack

Beginning at 2021-10-08 00:39:58 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS21160 ASN-MARKEL, GB.

But beginning at 2021-10-08 00:39:58, the same prefix ( was also announced by ASN 19905.

This was detected by 12 BGPMon peers.

Start time: 2021-10-08 00:39:58 UTC
Expected prefix:
Expected ASN: 21160 (ASN-MARKEL, GB)
Event Details
Detected advertisement:
Detected Origin ASN 19905 (NEUSTAR-AS6, US)
Detected AS Path 14613 6939 6762 7195 23059 19905
Detected by number of BGPMon peers: 12

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