Possible BGP hijack

Beginning at 2023-09-12 10:01:26, we detected a possible BGP hijack.

Prefix 221.122.48.0/20, Normally announced by AS4808 CHINA169-BJ China Unicom Beijing Province Network, CN

Starting at 2023-09-12 10:01:26, a more specific route (221.122.63.0/24) was announced by ASN 4515.

This was detected by 7 BGPMon peers.

Expected
Start time: 2023-09-12 10:01:26 UTC
Expected prefix: 221.122.48.0/20
Expected ASN: 4808 (CHINA169-BJ China Unicom Beijing Province Network, CN)
Event Details
Detected advertisement: 221.122.63.0/24
Detected Origin ASN 4515 (ERX-STAR HKT Limited, HK)
Detected AS Path 34019 35280 4635 4515
Detected by number of BGPMon peers: 7

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