Possible BGP hijack

Beginning at 2020-10-27 18:30:28 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS31220 CARRENZA-AS, GB.

But beginning at 2020-10-27 18:30:28, the same prefix ( was also announced by ASN 3356.

This was detected by 74 BGPMon peers.

Start time: 2020-10-27 18:30:28 UTC
Expected prefix:
Expected ASN: 31220 (CARRENZA-AS, GB)
Event Details
Detected advertisement:
Detected Origin ASN 3356 (LEVEL3, US)
Detected AS Path 393891 6327 3356
Detected by number of BGPMon peers: 74

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