Possible BGP hijack

Beginning at 2019-07-31 22:34:11, we detected a possible BGP hijack.

Prefix 8.23.176.0/20, Normally announced by AS174 COGENT-174 - Cogent Communications, US

Starting at 2019-07-31 22:34:11, a more specific route (8.23.188.0/22) was announced by ASN 134196.

This was detected by 147 BGPMon peers.

Expected
Start time: 2019-07-31 22:34:11 UTC
Expected prefix: 8.23.176.0/20
Expected ASN: 174 (COGENT-174 - Cogent Communications, US)
Event Details
Detected advertisement: 8.23.188.0/22
Detected Origin ASN 134196 (ULAN-NETWORK-LIMITED ULan Network Limited, HK)
Detected AS Path 33362 6461 6453 134196
Detected by number of BGPMon peers: 147

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