Possible BGP hijack

Beginning at 2017-07-13 23:53:33 UTC, we detected a possible BGP hijack.

Prefix 201.77.80.0/20, is normally announced by AS28646 Confederação Int. das Coop. Ligadas ao SICREDI.

But beginning at 2017-07-13 23:53:33, the same prefix (201.77.80.0/20) was also announced by ASN 3356.

This was detected by 121 BGPMon peers.

Expected
Start time: 2017-07-13 23:53:33 UTC
Expected prefix: 201.77.80.0/20
Expected ASN: 28646 (Confederação Int. das Coop. Ligadas ao SICREDI)
Event Details
Detected advertisement: 201.77.80.0/20
Detected Origin ASN 3356 (Level 3 Communications, Inc.)
Detected AS Path 13335 9498 3356
Detected by number of BGPMon peers: 121

Watch the replay of this event