Possible BGP hijack

Beginning at 2019-11-01 04:44:29 UTC, we detected a possible BGP hijack.

Prefix 152.231.27.0/24, is normally announced by AS266877 --No Registry Entry--.

But beginning at 2019-11-01 04:44:29, the same prefix (152.231.27.0/24) was also announced by ASN 265855.

This was detected by 89 BGPMon peers.

Expected
Start time: 2019-11-01 04:44:29 UTC
Expected prefix: 152.231.27.0/24
Expected ASN: 266877 (--No Registry Entry--)
Event Details
Detected advertisement: 152.231.27.0/24
Detected Origin ASN 265855 (LEGON TELECOMUNICACIONES SAS, CO)
Detected AS Path 53131 3549 1299 23520 262186 265855
Detected by number of BGPMon peers: 89

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