Possible BGP hijack

Beginning at 2021-10-19 17:54:47 UTC, we detected a possible BGP hijack.

Prefix 217.76.248.0/21, is normally announced by AS200833 ANTARES4G, RU.

But beginning at 2021-10-19 17:54:47, the same prefix (217.76.248.0/21) was also announced by ASN 41664.

This was detected by 78 BGPMon peers.

Expected
Start time: 2021-10-19 17:54:47 UTC
Expected prefix: 217.76.248.0/21
Expected ASN: 200833 (ANTARES4G, RU)
Event Details
Detected advertisement: 217.76.248.0/21
Detected Origin ASN 41664 (SEMSER-AS, KZ)
Detected AS Path 46435 2914 3257 12389 13259 41664
Detected by number of BGPMon peers: 78

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