Possible BGP hijack

Beginning at 2022-12-15 07:23:36, we detected a possible BGP hijack.

Prefix 103.249.12.0/23, Normally announced by AS136958 UNICOM-GUANGZHOU-IDC China Unicom Guangdong IP network, CN

Starting at 2022-12-15 07:23:36, a more specific route (103.249.12.0/24) was announced by ASN 7018.

This was detected by 2 BGPMon peers.

Expected
Start time: 2022-12-15 07:23:36 UTC
Expected prefix: 103.249.12.0/23
Expected ASN: 136958 (UNICOM-GUANGZHOU-IDC China Unicom Guangdong IP network, CN)
Event Details
Detected advertisement: 103.249.12.0/24
Detected Origin ASN 7018 (ATT-INTERNET4, US)
Detected AS Path 24751 6667 3257 7018
Detected by number of BGPMon peers: 2

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