Possible BGP hijack

Beginning at 2019-03-28 15:45:13, we detected a possible BGP hijack.

Prefix 168.121.236.0/23, Normally announced by AS27843 OPTICAL TECHNOLOGIES S.A.C., PE

Starting at 2019-03-28 15:45:13, a more specific route (168.121.237.0/24) was announced by ASN 264238.

This was detected by 27 BGPMon peers.

Expected
Start time: 2019-03-28 15:45:13 UTC
Expected prefix: 168.121.236.0/23
Expected ASN: 27843 (OPTICAL TECHNOLOGIES S.A.C., PE)
Event Details
Detected advertisement: 168.121.237.0/24
Detected Origin ASN 264238 (Link Net-Igarapava, BR)
Detected AS Path 28300 264238
Detected by number of BGPMon peers: 27

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