Possible BGP hijack

Beginning at 2018-07-08 06:20:00 UTC, we detected a possible BGP hijack.

Prefix 200.12.171.0/24, is normally announced by AS52252 Entel PCS Telecomunicaciones S.A. (Sis).

But beginning at 2018-07-08 06:20:00, the same prefix (200.12.171.0/24) was also announced by ASN 6.

This was detected by 179 BGPMon peers.

Expected
Start time: 2018-07-08 06:20:00 UTC
Expected prefix: 200.12.171.0/24
Expected ASN: 52252 (Entel PCS Telecomunicaciones S.A. (Sis))
Event Details
Detected advertisement: 200.12.171.0/24
Detected Origin ASN 6 (Bull HN Information Systems Inc.)
Detected AS Path 1126 24785 174 3356 27986 6471 6
Detected by number of BGPMon peers: 179

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