Possible BGP hijack

Beginning at 2021-02-02 14:52:44 UTC, we detected a possible BGP hijack.

Prefix 86.108.165.0/24, is normally announced by AS16135 TURKCELL-AS Turkcell A.S., TR.

But beginning at 2021-02-02 14:52:44, the same prefix (86.108.165.0/24) was also announced by ASN 3257.

This was detected by 80 BGPMon peers.

Expected
Start time: 2021-02-02 14:52:44 UTC
Expected prefix: 86.108.165.0/24
Expected ASN: 16135 (TURKCELL-AS Turkcell A.S., TR)
Event Details
Detected advertisement: 86.108.165.0/24
Detected Origin ASN 3257 (GTT-BACKBONE GTT, US)
Detected AS Path 28292 8167 7738 3257
Detected by number of BGPMon peers: 80

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