Possible BGP hijack

Beginning at 2023-02-17 19:01:47 UTC, we detected a possible BGP hijack.

Prefix 140.99.1.0/24, is normally announced by AS137409 GSLNETWORKS-AS-AP GSL Networks Pty LTD, AU.

But beginning at 2023-02-17 19:01:47, the same prefix (140.99.1.0/24) was also announced by ASN 1239.

This was detected by 25 BGPMon peers.

Expected
Start time: 2023-02-17 19:01:47 UTC
Expected prefix: 140.99.1.0/24
Expected ASN: 137409 (GSLNETWORKS-AS-AP GSL Networks Pty LTD, AU)
Event Details
Detected advertisement: 140.99.1.0/24
Detected Origin ASN 1239 (SPRINTLINK, US)
Detected AS Path 49134 53356 6939 1239
Detected by number of BGPMon peers: 25

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