Possible BGP hijack

Beginning at 2021-02-07 18:07:10, we detected a possible BGP hijack.

Prefix 5.128.0.0/16, Normally announced by AS31200 NTK IPv6 customers, RU

Starting at 2021-02-07 18:07:10, a more specific route (5.128.0.0/21) was announced by ASN 3356.

This was detected by 96 BGPMon peers.

Expected
Start time: 2021-02-07 18:07:10 UTC
Expected prefix: 5.128.0.0/16
Expected ASN: 31200 (NTK IPv6 customers, RU)
Event Details
Detected advertisement: 5.128.0.0/21
Detected Origin ASN 3356 (LEVEL3, US)
Detected AS Path 20634 8447 3356
Detected by number of BGPMon peers: 96

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