Possible BGP hijack

Beginning at 2021-09-10 20:07:24, we detected a possible BGP hijack.

Prefix 172.67.0.0/20, Normally announced by AS13335 CLOUDFLARENET, US

Starting at 2021-09-10 20:07:24, a more specific route (172.67.0.0/24) was announced by ASN 265345.

This was detected by 2 BGPMon peers.

Expected
Start time: 2021-09-10 20:07:24 UTC
Expected prefix: 172.67.0.0/20
Expected ASN: 13335 (CLOUDFLARENET, US)
Event Details
Detected advertisement: 172.67.0.0/24
Detected Origin ASN 265345 (HUP TELECOM LTDA, BR)
Detected AS Path 263287 262868 52720 52872 265345
Detected by number of BGPMon peers: 2

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