AS13433 — COXNET

AS13433 announces 11 IPv4 prefixes covering 70,400 addresses and 1 IPv6 prefixes.

About this network

Every record names four contact roles, one of which has the registry's own name in it.

What it's used for

• A media and communications company's corporate network. 70,400 addresses across eleven IPv4 prefixes, three observed BGP neighbours, and the IPv6 block 2607:fc40::/32.

Notable

• Eight blocks are netname COXMEDIAGROUP, registered to Cox Newspapers/AJC with a slash in the name.
• Each of those records lists four roles: network engineering, an operations centre, and an abuse contact whose label includes the registry's name.
• Two blocks are netname BRW-6617-COXENTERPRIS, cut off mid-word at twenty-one characters.
• The eight media blocks are a /17, /18, /19, /20, /21, /22, /23 and /24, all from one range.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• Naming the registry inside a contact role means the organisation maintains more than one abuse address and needed to mark which one the registry record points at. That is a company large enough for its public contact and its internal one to be different teams.
• The eight prefixes are consecutive powers of two covering one allocation, announced separately to three upstreams. Unlike a single-homed network doing the same thing, here there is somewhere for the pieces to go.
• A newspaper title inside the registrant of a network holding seventy thousand addresses is the corporate history: the media group came first and the rest of the company grew around it.

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

Announced prefixes

• 66.6.144.0/20
• 67.97.216.0/23
• 67.97.220.0/23
• 169.137.0.0/17
• 169.137.128.0/18
• 169.137.192.0/19
• 169.137.224.0/20
• 169.137.241.0/24
• 169.137.242.0/23
• 169.137.244.0/22
• 169.137.248.0/21
• 2607:fc40::/32

Upstream networks

• AS7725 Comcast Cable Communications, LLC
• AS22773 Cox Communications Inc.
• AS13335 Cloudflare, Inc.
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS7725 Comcast Cable Communications, LLC
• AS22773 Cox Communications Inc.
• AS13335 Cloudflare, Inc.
• AS7018 AT&T Enterprises, LLC