AS13925 — NULLROUTE

AS13925 announces 2 IPv4 prefixes covering 1,536 addresses and 2 IPv6 prefixes.

About this network

An AS named after the place packets go to die, announcing amateur radio address space.

What it's used for

• A small operator peering widely. 1,536 addresses across two IPv4 prefixes, two IPv6 prefixes, and seven observed BGP neighbours.

Notable

• One block is 44.4.64.0/22, netname AMPRNET, registered to Amateur Radio Digital Communications.
• The other is 23.131.160.0/23, netname NET23, registered to American Registry for Internet Numbers.
• The IPv6 prefixes are 2001:470:f6::/48 and 2620:138:5000::/47.
• Six addresses were queried for reverse DNS and none returned a name.

Interesting

• Seven peers for this little space is the ratio of a network that exists to connect rather than to serve. Space is cheap to announce and peering is where the work is, so an operator at an exchange can carry more neighbours than addresses without anything being unusual.
• Amateur radio address space predates the commercial internet and is administered by the radio community rather than sold. A block from it announced alongside ordinary space is one operator bridging the two, which is most of what that range is used for now.
• The second block still names the registry as its holder, so the record was issued and never completed while the addresses route perfectly well regardless.

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

Announced prefixes

• 23.131.160.0/23
• 44.4.64.0/22
• 2001:470:f6::/48
• 2620:138:5000::/47

Upstream networks

• AS6939 Hurricane Electric LLC
• AS20055 Wholesail networks LLC
• AS58057 Securebit AG

Downstream networks

• AS22679 m2os LLC
• AS63479 HamWAN

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS22679 m2os LLC
• AS20055 Wholesail networks LLC
• AS63479 HamWAN
• AS58057 Securebit AG

Internet exchanges

• Fremont Cabal Internet Exchange — Fremont, United States