Possible BGP hijack

Beginning at 2021-10-24 20:41:00, we detected a possible BGP hijack.

Prefix 170.111.0.0/16, Normally announced by AS20311 VALERO, US

Starting at 2021-10-24 20:41:00, a more specific route (170.111.170.0/24) was announced by ASN 270418.

This was detected by 19 BGPMon peers.

Expected
Start time: 2021-10-24 20:41:00 UTC
Expected prefix: 170.111.0.0/16
Expected ASN: 20311 (VALERO, US)
Event Details
Detected advertisement: 170.111.170.0/24
Detected Origin ASN 270418 (JABES ANTONIO DA SILVA ME, BR)
Detected AS Path 28646 267420 270418
Detected by number of BGPMon peers: 19

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