Possible BGP hijack

Beginning at 2019-09-05 20:16:22, we detected a possible BGP hijack.

Prefix 2600:3600::/28, Normally announced by AS33657 CMCS - Comcast Cable Communications, LLC, US

Starting at 2019-09-05 20:16:22, a more specific route (2600:3600::/29) was announced by ASN 8553.

This was detected by 59 BGPMon peers.

Expected
Start time: 2019-09-05 20:16:22 UTC
Expected prefix: 2600:3600::/28
Expected ASN: 33657 (CMCS - Comcast Cable Communications, LLC, US)
Event Details
Detected advertisement: 2600:3600::/29
Detected Origin ASN 8553 (AVENSYS 180 Attercliffe Road, GB)
Detected AS Path 202032 8220 3356 174 24720 8553
Detected by number of BGPMon peers: 59

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