Possible BGP hijack

Beginning at 2023-10-29 03:48:14 UTC, we detected a possible BGP hijack.

Prefix 91.234.201.0/24, is normally announced by AS57750 NDS-UK, GB.

But beginning at 2023-10-29 03:48:14, the same prefix (91.234.201.0/24) was also announced by ASN 21486.

This was detected by 3 BGPMon peers.

Expected
Start time: 2023-10-29 03:48:14 UTC
Expected prefix: 91.234.201.0/24
Expected ASN: 57750 (NDS-UK, GB)
Event Details
Detected advertisement: 91.234.201.0/24
Detected Origin ASN 21486 (SYNAMEDIA-AS, IL)
Detected AS Path 6881 15685 42000 39392 33891 1680 21486
Detected by number of BGPMon peers: 3

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