Possible BGP hijack

Beginning at 2019-03-18 21:48:23 UTC, we detected a possible BGP hijack.

Prefix 83.137.240.0/24, is normally announced by AS48702 ENGIE-AS, FR.

But beginning at 2019-03-18 21:48:23, the same prefix (83.137.240.0/24) was also announced by ASN 15681.

This was detected by 185 BGPMon peers.

Expected
Start time: 2019-03-18 21:48:23 UTC
Expected prefix: 83.137.240.0/24
Expected ASN: 48702 (ENGIE-AS, FR)
Event Details
Detected advertisement: 83.137.240.0/24
Detected Origin ASN 15681 (ENGIE-, BE)
Detected AS Path 27553 1299 8220 15681
Detected by number of BGPMon peers: 185

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