HP-UX IPv6 Transport Administrator's Guide for TOUR 2.0 (April 2004, rev 2)

IPv6 Addressing and Concepts
Where to Get IPv6 Addresses
Chapter 656
Where to Get IPv6 Addresses
To obtain an IPv6 address, contact a local ISP or the Regional Internet
Registries from the following list:
ARIN - American IPv6 registration services
APNIC- Asia Pacific Network Information Center
RIPE - European Regional Internet Registry
The amount of addresses allocated varies according to your network
requirements. Small Internet Service Providers (ISPs) or end nodes
acquire IPv6 addresses from their upstream provider. Large ISPs, for
example can receive from ARIN a minimum prefix of /48 with a
second-level allocation of 16 bits for subnets. The remaining 64 bits are
for a network interface.
IPv6 Address Formats
IPv6 addresses are 128-bit entities. IPv4 addresses are 32-bit addresses
normally written as four decimal numbers (dotted decimal), one for each
byte of the address.
Example: 192.1.2.34
IPv6 Node Addresses are 128-bit records represented as eight fields of up
to four hexadecimal digits. A colon separates each field (:). Example:
3ffe:ffff:101::230:6eff:fe04:d9ff.
NOTE The symbol “::” is a special syntax that can be used as a shorthand way of
representing multiple 16-bit groups of contiguous 0’s (zeros). The “::” can
appear anywhere in the address; however it can only appear once in the
address.