Possible BGP hijack

Beginning at 2023-02-21 11:04:07, we detected a possible BGP hijack.

Prefix 140.90.0.0/16, Normally announced by AS6629 NOAA-SILVERSPRING, US

Starting at 2023-02-21 11:04:07, a more specific route (140.90.101.0/24) was announced by ASN 7602.

This was detected by 38 BGPMon peers.

Expected
Start time: 2023-02-21 11:04:07 UTC
Expected prefix: 140.90.0.0/16
Expected ASN: 6629 (NOAA-SILVERSPRING, US)
Event Details
Detected advertisement: 140.90.101.0/24
Detected Origin ASN 7602 (SPT-AS-VN Saigon Postel Corporation, VN)
Detected AS Path 63956 6762 7473 7552 45903 7602
Detected by number of BGPMon peers: 38

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