Possible BGP hijack

Beginning at 2019-08-13 13:11:53 UTC, we detected a possible BGP hijack.

Prefix 205.203.99.0/24, is normally announced by AS2687 ATGS-MMD-AS - AT&T Global Network Services, LLC, US.

But beginning at 2019-08-13 13:11:53, the same prefix (205.203.99.0/24) was also announced by ASN 15951.

This was detected by 55 BGPMon peers.

Expected
Start time: 2019-08-13 13:11:53 UTC
Expected prefix: 205.203.99.0/24
Expected ASN: 2687 (ATGS-MMD-AS - AT&T Global Network Services, LLC, US)
Event Details
Detected advertisement: 205.203.99.0/24
Detected Origin ASN 15951 (DJUK London Data Centers, GB)
Detected AS Path 200155 39392 3257 9293 9293 9293 15951
Detected by number of BGPMon peers: 55

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