Possible BGP hijack

Beginning at 2021-04-21 17:55:16, we detected a possible BGP hijack.

Prefix 20.0.0.0/11, Normally announced by AS8075 MICROSOFT-CORP-MSN-AS-BLOCK, US

Starting at 2021-04-21 17:55:16, a more specific route (20.0.5.0/24) was announced by ASN 52850.

This was detected by 12 BGPMon peers.

Expected
Start time: 2021-04-21 17:55:16 UTC
Expected prefix: 20.0.0.0/11
Expected ASN: 8075 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
Event Details
Detected advertisement: 20.0.5.0/24
Detected Origin ASN 52850 (Oxente.net Solucoes Tecnologicas Eireli, BR)
Detected AS Path 28300 52850
Detected by number of BGPMon peers: 12

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