AS25920 — -Reserved AS-

AS25920 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

The AS handle is -Reserved AS- and the holder is Cogent Communications, LLC.

What it's used for

• The address space carries infrastructure for Cogent Communications, LLC, as indicated by the netname COGENT-A on the prefix 38.86.74.0/23.
• The inventory consists of 768 IPv4 addresses across 2 prefixes, with 2 observed neighbours, suggesting a transit or peering role rather than a large access network.

Notable

• Registrants include Cogent Communications, LLC for 38.86.74.0/23 and Level 3 Parent, LLC for 50.58.172.0/24, indicating a mix of owned and potentially leased or acquired space.
• The address inventory is small and fragmented, with one prefix registered to Cogent and another to Level 3 Parent, LLC, reflecting historical consolidation or leasing arrangements.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 38.86.74.0/23

Upstream networks

• AS11550 Smithville Digital, LLC

Adjacent networks

• AS11550 Smithville Digital, LLC