Possible BGP hijack

Beginning at 2020-11-16 08:54:58 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS27681 Grupo Roche Syntex de Mexico S.A. de C.V., MX.

But beginning at 2020-11-16 08:54:58, the same prefix ( was also announced by ASN 203.

This was detected by 32 BGPMon peers.

Start time: 2020-11-16 08:54:58 UTC
Expected prefix:
Expected ASN: 27681 (Grupo Roche Syntex de Mexico S.A. de C.V., MX)
Event Details
Detected advertisement:
Detected Origin ASN 203 (CENTURYLINK-LEGACY-LVLT-203, US)
Detected AS Path 200005 3356 203
Detected by number of BGPMon peers: 32

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