Possible BGP hijack

Beginning at 2021-01-29 20:56:24 UTC, we detected a possible BGP hijack.

Prefix 170.39.136.0/24, is normally announced by AS397143 NEPTUNE-NETWORKS, US.

But beginning at 2021-01-29 20:56:24, the same prefix (170.39.136.0/24) was also announced by ASN 21700.

This was detected by 121 BGPMon peers.

Expected
Start time: 2021-01-29 20:56:24 UTC
Expected prefix: 170.39.136.0/24
Expected ASN: 397143 (NEPTUNE-NETWORKS, US)
Event Details
Detected advertisement: 170.39.136.0/24
Detected Origin ASN 21700 (NEPTUNE-NETWORKS, US)
Detected AS Path 8468 1273 174 21700
Detected by number of BGPMon peers: 121

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