Possible BGP hijack

Beginning at 2020-01-13 01:29:43 UTC, we detected a possible BGP hijack.

Prefix 203.90.253.0/24, is normally announced by AS19905 NEUSTAR-AS6 - NeuStar, Inc., US.

But beginning at 2020-01-13 01:29:43, the same prefix (203.90.253.0/24) was also announced by ASN 55355.

This was detected by 23 BGPMon peers.

Expected
Start time: 2020-01-13 01:29:43 UTC
Expected prefix: 203.90.253.0/24
Expected ASN: 19905 (NEUSTAR-AS6 - NeuStar, Inc., US)
Event Details
Detected advertisement: 203.90.253.0/24
Detected Origin ASN 55355 (ISP-AS-AP ISP, HK)
Detected AS Path 328145 6939 15412 9304 55355
Detected by number of BGPMon peers: 23

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