AS13638 — METALINK

AS13638 announces 7 IPv4 prefixes covering 33,792 addresses and 1 IPv6 prefixes.

About this network

Reverse names pack the address backwards, an extra identifier, the assignment method and the access medium into one label.

What it's used for

• A regional internet provider. 33,792 addresses across fifteen IPv4 prefixes, the IPv6 block 2606:5100::/32, and two observed BGP neighbours.

Notable

• Six of eighteen sampled addresses answered, as 254-55-33-162-108-dhcp.wls.metalink.net and similar.
• Each name is the four octets reversed, then a number that varies per address, then dhcp.
• The next label is the medium: wls on most, fib on one, and that one sits under a different provider's domain entirely.
• Netnames are MTLT on three blocks and the full company name on the rest.
• Registrants append two or three internal roles after semicolons, including one for DNS and one for abuse.

Interesting

• A label that states the addresses are handed out dynamically, and by what kind of link, is a support tool. An engineer reading a complaint learns whether the customer is on wireless or fibre before opening a ticket, and so does anyone else looking.
• One address answering under another company's domain, with the fibre label, marks space operated for or inherited from a second brand.
• Fifteen prefixes with two upstreams is space accumulated from many small allocations rather than split for routing, which is the normal shape of a provider that grew by buying whatever was available.

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

Announced prefixes

• 64.186.64.0/20
• 65.254.144.0/20
• 72.11.0.0/19
• 76.76.32.0/20
• 162.33.32.0/19
• 173.241.48.0/20
• 199.38.204.0/22
• 2606:5100::/32

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS7106 Com Net, Inc.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS7106 Com Net, Inc.