Possible BGP hijack

Beginning at 2020-08-24 20:44:34 UTC, we detected a possible BGP hijack.

Prefix 2a06:5fc4::/30, is normally announced by AS17231 ATT-CERFNET-BLOCK, US.

But beginning at 2020-08-24 20:44:34, the same prefix (2a06:5fc4::/30) was also announced by ASN 208254.

This was detected by 51 BGPMon peers.

Expected
Start time: 2020-08-24 20:44:34 UTC
Expected prefix: 2a06:5fc4::/30
Expected ASN: 17231 (ATT-CERFNET-BLOCK, US)
Event Details
Detected advertisement: 2a06:5fc4::/30
Detected Origin ASN 208254 (V6PROXIES, GB)
Detected AS Path 36692 3257 3356 46573 208254
Detected by number of BGPMon peers: 51

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