Possible BGP hijack

Beginning at 2020-10-20 17:35:17, we detected a possible BGP hijack.

Prefix 12.0.0.0/9, Normally announced by AS7018 ATT-INTERNET4, US

Starting at 2020-10-20 17:35:17, a more specific route (12.1.1.0/24) was announced by ASN 7303.

This was detected by 2 BGPMon peers.

Expected
Start time: 2020-10-20 17:35:17 UTC
Expected prefix: 12.0.0.0/9
Expected ASN: 7018 (ATT-INTERNET4, US)
Event Details
Detected advertisement: 12.1.1.0/24
Detected Origin ASN 7303 (Telecom Argentina S.A., AR)
Detected AS Path 4270 11058 10481 7303
Detected by number of BGPMon peers: 2

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