Possible BGP hijack

Beginning at 2023-08-27 18:59:37, we detected a possible BGP hijack.

Prefix 5.25.160.0/20, Normally announced by AS16135 TURKCELL-AS Turkcell A.S., TR

Starting at 2023-08-27 18:59:37, a more specific route (5.25.172.0/24) was announced by ASN 6453.

This was detected by 11 BGPMon peers.

Expected
Start time: 2023-08-27 18:59:37 UTC
Expected prefix: 5.25.160.0/20
Expected ASN: 16135 (TURKCELL-AS Turkcell A.S., TR)
Event Details
Detected advertisement: 5.25.172.0/24
Detected Origin ASN 6453 (AS6453, US)
Detected AS Path 48200 6762 6453
Detected by number of BGPMon peers: 11

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