Possible BGP hijack

Beginning at 2019-11-08 16:27:34, we detected a possible BGP hijack.

Prefix 201.140.238.0/23, Normally announced by AS266148 a.s. vera cruz - me, BR

Starting at 2019-11-08 16:27:34, a more specific route (201.140.238.0/24) was announced by ASN 263276.

This was detected by 148 BGPMon peers.

Expected
Start time: 2019-11-08 16:27:34 UTC
Expected prefix: 201.140.238.0/23
Expected ASN: 266148 (a.s. vera cruz - me, BR)
Event Details
Detected advertisement: 201.140.238.0/24
Detected Origin ASN 263276 (BBG TELECOM, BR)
Detected AS Path 22268 174 6762 40676 52863 263276
Detected by number of BGPMon peers: 148

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