6to4 IPv6 Address
From Teknologisk videncenter
6to4
| IPv6 Address Type: | 6to4 |
| Prefix: | 2002::/16 |
| Local Routeable: | Yes |
| Global Routeable: | Yes |
| Global Unique: | Yes |
| Example: | 2002:cb0a:3cdd:1::1 |
| IPv4 Equivalent: | No equivalent |
| Described in: | rfc3056 |
| Cisco Routing IPv6 over IPv4 | |
| version6.net on 6to4 |
Explanation
A 6to4 gateway adds its IPv4 address to this 2002::/16, creating a unique /48 prefix. As the IPv4 address of the gateway router is used to compose the IPv6 prefix, it is possible to reverse the process and identify the IPv4 address, which can then be looked up in the relevant RIR’s Whois database.
You can do this on the following webpage: http://www.potaroo.net/cgi-bin/ipv6addr