Net NameP3BK4C DN42 Network
AS Number4242422092
IPv4 Space172.21.67.192/27
IPv6 Spacefd63:672f:38e7::/48

Hello, AS4242422092 in DN42 is open for BGP peerings*.

Contact me through IRC (tomkap@HackInt) or e-mail (dn42 [at] pebkac [dot] gr) and set your side with the following node details.

* = If you're not using an AS number from 4242420000-4242429999 range,
please mention it in your request & ignore the following configuration details.


xxxx = the last 4 digits of your DN42 AS number.

Network Diagram

P3BK4C Network Diagram

About dn42

What is dn42?

Decentralized network 42 (also known as dn42) is a decentralized peer-to-peer network built using VPNs and software/hardware BGP routers.

While other darknets try to establish anonymity for their participants, that is not what dn42 aims for. It is a network to explore routing technologies used in the Internet and tries to establish direct non-NAT-ed connections between the members.

The network is not fully meshed. dn42 uses mostly tunnels instead of physical links between the individual networks. Each participant is connected to one or more other participants. Over the VPN or the physical links, BGP is used for inter AS routing. While OSPF is the most commonly used protocol for intra AS routing, each participant is free to choose any other IGP for their AS.

Address space

Network address space for IPv4 consists of private subnets: is the main subnet. Note that other private address ranges may also be announced in dn42, as the network is interconnected with other similar projects. Most notably, ChaosVPN uses and parts of and ICVPN uses

For IPv6, Unique Local Address (ULA, the IPv6 equivalent of private address range) are used. While some participants also announce Globally routable addresses, these announcements are only accepted by a small subset of dn42.

AS numbers

In order to use BGP, even in a private environment, Autonomous System Numbers are needed. dn42 uses several private or reserved AS numbers ranges, including 64512 to 64855 and 76100 to 76199. Since June 2014, dn42 is now using a new private range, 4242420000 to 4242429999, part of larger private range defined by RFC 6996.

Dn42 TLD

Websites and services hosted on the Dn42 network often use the dn42 top-level domain. The dn42 tld is not an official IANA, it is handled through the dn42 registry. Internal anycast servers for dn42 are found at,, and fd42:d42:d42:54::1, fd42:d42:d42:53::1.

...more at, &