Possible BGP hijack

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

Prefix 129.159.0.0/20, Normally announced by AS31898 ORACLE-BMC-31898, US

Starting at 2023-09-12 10:01:26, a more specific route (129.159.4.0/23) was announced by ASN 4515.

This was detected by 7 BGPMon peers.

Expected
Start time: 2023-09-12 10:01:26 UTC
Expected prefix: 129.159.0.0/20
Expected ASN: 31898 (ORACLE-BMC-31898, US)
Event Details
Detected advertisement: 129.159.4.0/23
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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