AS14042 — COMCAST-COMM-MGT-1

AS14042 announces 2 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

A cable giant's second network, small enough to fit in two blocks.

What it's used for

• Internal network space for a large cable operator, held under a separate management entity. 1,536 addresses across two IPv4 prefixes, with four observed BGP neighbours and no IPv6 announced.

Notable

• 208.79.64.0/22 and 199.27.170.0/23 both carry the netname COMCAST-COMM-MGT, matching the AS handle exactly.
• Both blocks are registered to the management company rather than to the operating one.
• Six addresses were queried for reverse DNS and none returned a name.
• The AS first appeared in routing on 2000-08-18.

Interesting

• Very large carriers run more than one AS, and the extras are rarely the interesting part of the business. This one holds a small amount of space under the legal entity that manages the group rather than the one that sells service, which is the usual home for corporate systems, acquired networks and anything that needs to be kept out of the consumer routing plan.
• Four upstreams for such a small footprint is more redundancy than the address count suggests, and points at something that must stay reachable regardless of which part of the parent network is having a bad day.
• The netname repeating the AS handle with nothing added is the mark of records created in one sitting by someone with a naming rule rather than a description to give.
• Nothing published in reverse DNS keeps the internal estate invisible to anyone mapping it from outside.

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

Announced prefixes

• 199.27.170.0/23
• 208.79.64.0/22

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS3361 Digital Fortress, Inc.
• AS6461 Zayo Bandwidth
• AS7922 Comcast Cable Communications, LLC

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS3361 Digital Fortress, Inc.
• AS6461 Zayo Bandwidth
• AS7922 Comcast Cable Communications, LLC