Possible BGP hijack

Beginning at 2019-05-06 09:34:08, we detected a possible BGP hijack.

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

Starting at 2019-05-06 09:34:08, a more specific route (172.40.0.0/16) was announced by ASN 51079.

This was detected by 156 BGPMon peers.

Expected
Start time: 2019-05-06 09:34:08 UTC
Expected prefix: 172.32.0.0/11
Expected ASN: 21928 (T-MOBILE-AS21928 - T-Mobile USA, Inc., US)
Event Details
Detected advertisement: 172.40.0.0/16
Detected Origin ASN 51079 (MOKADI, PL)
Detected AS Path 197747 174 1299 51079
Detected by number of BGPMon peers: 156

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