Possible BGP hijack

Beginning at 2023-08-18 12:48:45 UTC, we detected a possible BGP hijack.

Prefix 91.207.1.0/24, is normally announced by AS30644 Unknown.

But beginning at 2023-08-18 12:48:45, the same prefix (91.207.1.0/24) was also announced by ASN 49981.

This was detected by 2 BGPMon peers.

Expected
Start time: 2023-08-18 12:48:45 UTC
Expected prefix: 91.207.1.0/24
Expected ASN: 30644 (Unknown)
Event Details
Detected advertisement: 91.207.1.0/24
Detected Origin ASN 49981 (WORLDSTREAM, NL)
Detected AS Path 202365 50673 49981
Detected by number of BGPMon peers: 2

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