Possible BGP hijack

Beginning at 2023-03-23 21:30:23 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS398387 BOULDER-INTERNET-01, US.

But beginning at 2023-03-23 21:30:23, the same prefix ( was also announced by ASN 12085.

This was detected by 4 BGPMon peers.

Start time: 2023-03-23 21:30:23 UTC
Expected prefix:
Expected ASN: 398387 (BOULDER-INTERNET-01, US)
Event Details
Detected advertisement:
Detected Origin ASN 12085 (EQUINIX-EC-DC, US)
Detected AS Path 263287 263396 7738 52320 12085
Detected by number of BGPMon peers: 4

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