Possible BGP hijack

Beginning at 2019-04-05 08:27:48 UTC, we detected a possible BGP hijack.

Prefix 140.205.192.0/18, is normally announced by AS37963 CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN.

But beginning at 2019-04-05 08:27:48, the same prefix (140.205.192.0/18) was also announced by ASN 38726.

This was detected by 58 BGPMon peers.

Expected
Start time: 2019-04-05 08:27:48 UTC
Expected prefix: 140.205.192.0/18
Expected ASN: 37963 (CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN)
Event Details
Detected advertisement: 140.205.192.0/18
Detected Origin ASN 38726 (VTCDIGICOM-AS-VN VTC DIGICOM, VN)
Detected AS Path 40191 9304 38726
Detected by number of BGPMon peers: 58

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