Possible BGP hijack

Beginning at 2021-09-27 06:34:01 UTC, we detected a possible BGP hijack.

Prefix 165.21.93.0/24, is normally announced by AS3758 SINGNET SingNet, SG.

But beginning at 2021-09-27 06:34:01, the same prefix (165.21.93.0/24) was also announced by ASN 19905.

This was detected by 18 BGPMon peers.

Expected
Start time: 2021-09-27 06:34:01 UTC
Expected prefix: 165.21.93.0/24
Expected ASN: 3758 (SINGNET SingNet, SG)
Event Details
Detected advertisement: 165.21.93.0/24
Detected Origin ASN 19905 (NEUSTAR-AS6, US)
Detected AS Path 25291 2914 19905
Detected by number of BGPMon peers: 18

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