AS13787 — CENTURYLINK-LEGACY-EMBARQ-JCTY

AS13787 announces 4 IPv4 prefixes covering 3,328 addresses and 0 IPv6 prefixes.

About this network

Five reverse zones across four brands for 3,328 addresses, with the service type written into the name.

What it's used for

• A regional telephone company's network, now part of a larger carrier. 3,328 addresses across four IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.

Notable

• Addresses answer under centurylinkservices.net, embarqservices.net, centurylink.net and embarqhsd.net, two brands with two zones each.
• Labels in those names say what the address is for: one marks voice service, one marks dynamic assignment and one marks static.
• Dynamic and static names both carry a two-letter state prefix before the address.
• One block answers as host254.embarqservices.net, naming only the final octet.
• The AS handle and both netnames stack the acquirer, the word legacy, the acquired brand and a site code.

Interesting

• Four brands in the reverse DNS of one small network is an acquisition that was never finished. Each zone works, each was authoritative for its own era, and nothing forced a migration because reverse records rarely break anything when they are stale.
• Publishing whether an address is dynamic, static or carrying voice traffic is useful operationally and equally useful to anyone deciding what to send it. The voice label in particular marks the addresses where call traffic terminates.
• One upstream for a carrier's own block is the parent network doing the carrying.

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

Announced prefixes

• 74.4.12.0/23
• 74.5.192.0/21
• 76.7.80.0/23
• 76.7.83.0/24

Upstream networks

• AS22561 CenturyLink Communications, LLC

Adjacent networks

• AS22561 CenturyLink Communications, LLC