Possible BGP hijack

Beginning at 2022-04-13 13:30:55, we detected a possible BGP hijack.

Prefix 91.200.164.0/22, Normally announced by AS35624 SILVERSTAR-AS, GB

Starting at 2022-04-13 13:30:55, a more specific route (91.200.164.0/24) was announced by ASN 38987.

This was detected by 18 BGPMon peers.

Expected
Start time: 2022-04-13 13:30:55 UTC
Expected prefix: 91.200.164.0/22
Expected ASN: 35624 (SILVERSTAR-AS, GB)
Event Details
Detected advertisement: 91.200.164.0/24
Detected Origin ASN 38987 (OST-AS, PL)
Detected AS Path 200155 39392 33891 20804 38987 38987 38987
Detected by number of BGPMon peers: 18

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