Possible BGP hijack

Beginning at 2018-11-02 23:14:12, we detected a possible BGP hijack.

Prefix 171.255.240.0/20, Normally announced by AS7552 Viettel Group

Starting at 2018-11-02 23:14:12, a more specific route (171.255.252.0/22) was announced by ASN 45609.

This was detected by 46 BGPMon peers.

Expected
Start time: 2018-11-02 23:14:12 UTC
Expected prefix: 171.255.240.0/20
Expected ASN: 7552 (Viettel Group)
Event Details
Detected advertisement: 171.255.252.0/22
Detected Origin ASN 45609 (Bharti Airtel Ltd. AS for GPRS Service)
Detected AS Path 202365 201106 23033 11404 6461 6453 9498 45609
Detected by number of BGPMon peers: 46

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