Possible BGP hijack

Beginning at 2021-05-25 18:56:46, we detected a possible BGP hijack.

Prefix 201.143.80.0/21, Normally announced by AS8151 Uninet S.A. de C.V., MX

Starting at 2021-05-25 18:56:46, a more specific route (201.143.86.0/24) was announced by ASN 263047.

This was detected by 121 BGPMon peers.

Expected
Start time: 2021-05-25 18:56:46 UTC
Expected prefix: 201.143.80.0/21
Expected ASN: 8151 (Uninet S.A. de C.V., MX)
Event Details
Detected advertisement: 201.143.86.0/24
Detected Origin ASN 263047 (Speednet Provedor de Acesso a Internet Ltda, BR)
Detected AS Path 397181 10929 6939 12956 12956 12956 12956 263047
Detected by number of BGPMon peers: 121

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