AS20398 — CNCS-AS

AS20398 announces 7 IPv4 prefixes covering 3,840 addresses and 0 IPv6 prefixes.

About this network

The AS handle CNCS-AS is held by Controlled Networks and Communications Solutions, Inc.

What it's used for

• The address space carries corporate infrastructure, evidenced by netnames such as CONTROLLED-NETWORKS, WEBTOGETHER-COM, and CNSL-32.
• The AS announces 3584 IPv4 addresses across 6 prefixes with 5 observed neighbours, a ratio consistent with an internal corporate estate rather than a transit or access provider.

Notable

• Registrants largely align with the announcer, including Controlled Networks and Communications Solutions, Inc. and Controlled Networks Solution LLC, though one prefix is registered to One Touch Direct.
• The inventory consists of six distinct IPv4 blocks, including /22, /23, and /24 sizes, with no IPv6 prefixes announced.

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

Announced prefixes

• 23.235.48.0/23
• 23.235.54.0/24
• 74.116.136.0/23
• 74.116.139.0/24
• 74.116.141.0/24
• 199.47.68.0/22
• 208.72.24.0/22

Upstream networks

• AS54004 Cablevision Lightpath LLC
• AS23096 Controlled Networks Solution LLC
• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS701 Verizon Business

Adjacent networks

• AS54004 Cablevision Lightpath LLC
• AS23096 Controlled Networks Solution LLC
• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS701 Verizon Business