Possible BGP hijack

Beginning at 2019-04-06 17:45:32, we detected a possible BGP hijack.

Prefix 200.141.64.0/18, Normally announced by AS7738 Telemar Norte Leste S.A., BR

Starting at 2019-04-06 17:45:32, a more specific route (200.141.90.0/24) was announced by ASN 16734.

This was detected by 185 BGPMon peers.

Expected
Start time: 2019-04-06 17:45:32 UTC
Expected prefix: 200.141.64.0/18
Expected ASN: 7738 (Telemar Norte Leste S.A., BR)
Event Details
Detected advertisement: 200.141.90.0/24
Detected Origin ASN 16734 (AS-SUNFIBERNET - Sun Fibernet Inc., US)
Detected AS Path 26120 3257 12956 23201 16734
Detected by number of BGPMon peers: 185

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