AS14478 — RECURSE-CENTER

AS14478 announces 1 IPv4 prefixes covering 256 addresses and 1 IPv6 prefixes.

About this network

A programmers' retreat that runs its own routing, in both address families.

What it's used for

• A self-directed programming retreat's network. 256 IPv4 addresses in a single prefix alongside an IPv6 2602:fb65::/47, with two observed BGP neighbours.

Notable

• The IPv4 block is 23.136.216.0/24, carrying the netname RECURSE-NET4 and registered to the organisation.
• That netname marks the address family in its final character.
• The IPv6 prefix is an unusual size, one step larger than the standard site allocation.
• Three addresses were queried for reverse DNS and none returned a name.

Interesting

• Almost nothing this small holds its own number, addresses in both families and two upstreams. For an organisation whose entire purpose is people learning how systems work, running the routing yourself is the point rather than an operational necessity.
• Announcing the odd-sized IPv6 prefix whole, rather than splitting it, keeps a single entry in everybody's routing table where two would fit, which is the neighbourly choice.
• Marking the family in the netname is the habit of an operator who expected a companion entry, and the IPv6 space here is announced without one.
• Nothing is published in the reverse DNS for the sampled addresses.

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

Announced prefixes

• 23.136.216.0/24
• 2602:fb65::/47

Upstream networks

• AS12271 Charter Communications Inc
• AS20473 The Constant Company, LLC

Adjacent networks

• AS12271 Charter Communications Inc
• AS20473 The Constant Company, LLC