Possible BGP hijack

Beginning at 2020-12-22 17:47:00 UTC, we detected a possible BGP hijack.

Prefix 23.133.192.0/24, is normally announced by AS16734 -Reserved AS-, ZZ.

But beginning at 2020-12-22 17:47:00, the same prefix (23.133.192.0/24) was also announced by ASN 266652.

This was detected by 51 BGPMon peers.

Expected
Start time: 2020-12-22 17:47:00 UTC
Expected prefix: 23.133.192.0/24
Expected ASN: 16734 (-Reserved AS-, ZZ)
Event Details
Detected advertisement: 23.133.192.0/24
Detected Origin ASN 266652 (HARPA_NET LTDA ME, BR)
Detected AS Path 20205 6939 266652
Detected by number of BGPMon peers: 51

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