Possible BGP hijack

Beginning at 2022-10-14 07:03:06, we detected a possible BGP hijack.

Prefix 121.50.184.0/21, Normally announced by AS18046 DONGFONG-TW DongFong Technology Co. Ltd., TW

Starting at 2022-10-14 07:03:06, a more specific route (121.50.191.0/24) was announced by ASN 3491.

This was detected by 30 BGPMon peers.

Expected
Start time: 2022-10-14 07:03:06 UTC
Expected prefix: 121.50.184.0/21
Expected ASN: 18046 (DONGFONG-TW DongFong Technology Co. Ltd., TW)
Event Details
Detected advertisement: 121.50.191.0/24
Detected Origin ASN 3491 (BTN-ASN, US)
Detected AS Path 15296 6939 3491
Detected by number of BGPMon peers: 30

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