Possible BGP hijack

Beginning at 2022-01-14 10:17:46, we detected a possible BGP hijack.

Prefix 193.233.176.0/20, Normally announced by AS7018 ATT-INTERNET4, US

Starting at 2022-01-14 10:17:46, a more specific route (193.233.176.0/24) was announced by ASN 136923.

This was detected by 2 BGPMon peers.

Expected
Start time: 2022-01-14 10:17:46 UTC
Expected prefix: 193.233.176.0/20
Expected ASN: 7018 (ATT-INTERNET4, US)
Event Details
Detected advertisement: 193.233.176.0/24
Detected Origin ASN 136923 ()
Detected AS Path 201971 213035 136923
Detected by number of BGPMon peers: 2

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