Possible BGP hijack

Beginning at 2018-09-10 12:16:31, we detected a possible BGP hijack.

Prefix 172.32.0.0/11, Normally announced by AS21928 T-Mobile USA, Inc.

Starting at 2018-09-10 12:16:31, a more specific route (172.32.0.0/24) was announced by ASN 28224.

This was detected by 2 BGPMon peers.

Expected
Start time: 2018-09-10 12:16:31 UTC
Expected prefix: 172.32.0.0/11
Expected ASN: 21928 (T-Mobile USA, Inc.)
Event Details
Detected advertisement: 172.32.0.0/24
Detected Origin ASN 28224 (CPNET Com. e Serv. TelecomunicaƧƵes Ltda.)
Detected AS Path 28300 14840 28146 28224
Detected by number of BGPMon peers: 2

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