Possible BGP hijack

Beginning at 2023-07-12 09:21:20, we detected a possible BGP hijack.

Prefix, Normally announced by AS109 CISCOSYSTEMS, US

Starting at 2023-07-12 09:21:20, a more specific route ( was announced by ASN 12389.

This was detected by 55 BGPMon peers.

Start time: 2023-07-12 09:21:20 UTC
Expected prefix:
Expected ASN: 109 (CISCOSYSTEMS, US)
Event Details
Detected advertisement:
Detected Origin ASN 12389 (ROSTELECOM-AS, RU)
Detected AS Path 48659 1299 3356 12389
Detected by number of BGPMon peers: 55

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