Possible BGP hijack

Beginning at 2021-10-26 17:09:31 UTC, we detected a possible BGP hijack.

Prefix 193.34.72.0/22, is normally announced by AS39189 NET-2K 2K Merezha, Kyiv Ukraine, UA.

But beginning at 2021-10-26 17:09:31, the same prefix (193.34.72.0/22) was also announced by ASN 3257.

This was detected by 88 BGPMon peers.

Expected
Start time: 2021-10-26 17:09:31 UTC
Expected prefix: 193.34.72.0/22
Expected ASN: 39189 (NET-2K 2K Merezha, Kyiv Ukraine, UA)
Event Details
Detected advertisement: 193.34.72.0/22
Detected Origin ASN 3257 (GTT-BACKBONE GTT, US)
Detected AS Path 262595 16735 3257
Detected by number of BGPMon peers: 88

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