Possible BGP hijack

Beginning at 2019-02-12 21:13:20 UTC, we detected a possible BGP hijack.

Prefix 23.7.64.0/20, is normally announced by AS14080 Telmex Colombia S.A., CO.

But beginning at 2019-02-12 21:13:20, the same prefix (23.7.64.0/20) was also announced by ASN 7922.

This was detected by 189 BGPMon peers.

Expected
Start time: 2019-02-12 21:13:20 UTC
Expected prefix: 23.7.64.0/20
Expected ASN: 14080 (Telmex Colombia S.A., CO)
Event Details
Detected advertisement: 23.7.64.0/20
Detected Origin ASN 7922 (COMCAST-7922 - Comcast Cable Communications, LLC, US)
Detected AS Path 27553 12129 7922
Detected by number of BGPMon peers: 189

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