Possible BGP hijack

Beginning at 2020-06-08 16:00:27, we detected a possible BGP hijack.

Prefix 27.192.0.0/11, Normally announced by AS4837 CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN

Starting at 2020-06-08 16:00:27, a more specific route (27.211.228.0/22) was announced by ASN 2687.

This was detected by 155 BGPMon peers.

Expected
Start time: 2020-06-08 16:00:27 UTC
Expected prefix: 27.192.0.0/11
Expected ASN: 4837 (CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN)
Event Details
Detected advertisement: 27.211.228.0/22
Detected Origin ASN 2687 (ATGS-MMD-AS, US)
Detected AS Path 36692 3356 7018 2687
Detected by number of BGPMon peers: 155

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