Possible BGP hijack

Beginning at 2018-10-24 08:20:39, we detected a possible BGP hijack.

Prefix 211.154.52.0/22, Normally announced by AS4812 China Telecom (Group)

Starting at 2018-10-24 08:20:39, a more specific route (211.154.52.0/24) was announced by ASN 4515.

This was detected by 199 BGPMon peers.

Expected
Start time: 2018-10-24 08:20:39 UTC
Expected prefix: 211.154.52.0/22
Expected ASN: 4812 (China Telecom (Group))
Event Details
Detected advertisement: 211.154.52.0/24
Detected Origin ASN 4515 (PCCW IMSBiz)
Detected AS Path 6881 15685 1299 3491 4515
Detected by number of BGPMon peers: 199

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