Possible BGP hijack

Beginning at 2020-11-11 16:30:36 UTC, we detected a possible BGP hijack.

Prefix 185.221.198.0/23, is normally announced by AS57129 Unknown.

But beginning at 2020-11-11 16:30:36, the same prefix (185.221.198.0/23) was also announced by ASN 209372.

This was detected by 138 BGPMon peers.

Expected
Start time: 2020-11-11 16:30:36 UTC
Expected prefix: 185.221.198.0/23
Expected ASN: 57129 (Unknown)
Event Details
Detected advertisement: 185.221.198.0/23
Detected Origin ASN 209372 (IPMEN_FOR_CUSTOMERS, GB)
Detected AS Path 11071 3356 20485 33991 8496 209372
Detected by number of BGPMon peers: 138

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