Possible BGP hijack

Beginning at 2021-04-26 19:15:37, we detected a possible BGP hijack.

Prefix 157.14.64.0/20, Normally announced by AS131958 T-NET Tama Cable Network Co.,Ltd., JP

Starting at 2021-04-26 19:15:37, a more specific route (157.14.79.0/24) was announced by ASN 19905.

This was detected by 11 BGPMon peers.

Expected
Start time: 2021-04-26 19:15:37 UTC
Expected prefix: 157.14.64.0/20
Expected ASN: 131958 (T-NET Tama Cable Network Co.,Ltd., JP)
Event Details
Detected advertisement: 157.14.79.0/24
Detected Origin ASN 19905 (NEUSTAR-AS6, US)
Detected AS Path 268232 17222 2914 19905
Detected by number of BGPMon peers: 11

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