Possible BGP hijack

Beginning at 2021-10-15 19:30:02, we detected a possible BGP hijack.

Prefix 163.201.0.0/16, Normally announced by AS3741 IS, ZA

Starting at 2021-10-15 19:30:02, a more specific route (163.201.144.0/20) was announced by ASN 19905.

This was detected by 119 BGPMon peers.

Expected
Start time: 2021-10-15 19:30:02 UTC
Expected prefix: 163.201.0.0/16
Expected ASN: 3741 (IS, ZA)
Event Details
Detected advertisement: 163.201.144.0/20
Detected Origin ASN 19905 (NEUSTAR-AS6, US)
Detected AS Path 8399 8218 22822 19905
Detected by number of BGPMon peers: 119

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