Possible BGP hijack

Beginning at 2019-05-22 11:25:27 UTC, we detected a possible BGP hijack.

Prefix 194.156.140.0/24, is normally announced by AS200312 GOLRANG, IR.

But beginning at 2019-05-22 11:25:27, the same prefix (194.156.140.0/24) was also announced by ASN 42440.

This was detected by 91 BGPMon peers.

Expected
Start time: 2019-05-22 11:25:27 UTC
Expected prefix: 194.156.140.0/24
Expected ASN: 200312 (GOLRANG, IR)
Event Details
Detected advertisement: 194.156.140.0/24
Detected Origin ASN 42440 (RDG-AS DADEHGOSTAR-IGW, IR)
Detected AS Path 46435 2914 6453 12880 42440
Detected by number of BGPMon peers: 91

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