Possible BGP hijack

Beginning at 2019-04-25 12:43:30 UTC, we detected a possible BGP hijack.

Prefix 37.148.248.0/22, is normally announced by AS62238 SINAICT, IR.

But beginning at 2019-04-25 12:43:30, the same prefix (37.148.248.0/22) was also announced by ASN 5618.

This was detected by 2 BGPMon peers.

Expected
Start time: 2019-04-25 12:43:30 UTC
Expected prefix: 37.148.248.0/22
Expected ASN: 62238 (SINAICT, IR)
Event Details
Detected advertisement: 37.148.248.0/22
Detected Origin ASN 5618 (DPI, IR)
Detected AS Path 43561 34224 34984 12880 5618
Detected by number of BGPMon peers: 2

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