Possible BGP hijack

Beginning at 2018-10-09 23:20:01 UTC, we detected a possible BGP hijack.

Prefix 185.30.52.0/22, is normally announced by AS6848 Telenet BVBA.

But beginning at 2018-10-09 23:20:01, the same prefix (185.30.52.0/22) was also announced by ASN 21502.

This was detected by 48 BGPMon peers.

Expected
Start time: 2018-10-09 23:20:01 UTC
Expected prefix: 185.30.52.0/22
Expected ASN: 6848 (Telenet BVBA)
Event Details
Detected advertisement: 185.30.52.0/22
Detected Origin ASN 21502 (SFR SA)
Detected AS Path 202140 174 6453 21502 21502
Detected by number of BGPMon peers: 48

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