Possible BGP hijack

Beginning at 2021-04-21 12:16:29 UTC, we detected a possible BGP hijack.

Prefix 197.255.209.0/24, is normally announced by AS37200 SIMBANET-NIGERIA, NG.

But beginning at 2021-04-21 12:16:29, the same prefix (197.255.209.0/24) was also announced by ASN 64155.

This was detected by 4 BGPMon peers.

Expected
Start time: 2021-04-21 12:16:29 UTC
Expected prefix: 197.255.209.0/24
Expected ASN: 37200 (SIMBANET-NIGERIA, NG)
Event Details
Detected advertisement: 197.255.209.0/24
Detected Origin ASN 64155 (Unknown)
Detected AS Path 267170 28140 3356 36873 36873 37230 64155
Detected by number of BGPMon peers: 4

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