Cambridge G-RIN
(Geeks' Registry of Internet Numbers)
BCP5 (RFC1918) network numbers registry
Introduction
BCP5 (currently
RFC1918,
`Address Allocation for Private Internets') describes circumstances
where it can be useful to have non-globally-unique IP addresses, and
specifies three IPv4 address ranges which may be used for this
purpose. RFC1918 recommends that, to minimise the risk of clashes
when private internets need to be merged, address ranges should be
chosen at random.
This web page and database exist to help people choose ranges at
random, and to help them choose ranges which are not currently in use
by anyone else.
Pick a random subnet
Register a network range you are using
You may register an existing network range you are using in our
database.
You must enter an email address to `own' the database entry. This
email address will be mailed a reminder asking you to confirm/renew
your entry periodically, and will also be used to authorise changes to
the entry. It will be published on these pages unless you select to
hide it; apart from that we will only use it to contact you about your
database entry.
View database
Cambridge G-RIN
Queries or problems ? Contact the administrator,
Ian Jackson.