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This is a list of countries by IPv4 address allocation. The Internet Assigned Numbers Authority (IANA) distributes large blocks of addresses to regional Internet registries (RIRs), which then assign them to national Internet registries and local Internet registries within their respective service regions. [ 1 ]
This is a list of the IP protocol numbers found in the field Protocol of the IPv4 header and the Next Header field of the IPv6 header. It is an identifier for the ...
Used for link-local addresses [5] between two hosts on a single link when no IP address is otherwise specified, such as would have normally been retrieved from a DHCP server 172.16.0.0/12 172.16.0.0–172.31.255.255 1 048 576: Private network Used for local communications within a private network [3] 192.0.0.0/24 192.0.0.0–192.0.0.255 256
The full list of ISO 3166-1 codes assigned to countries and territories are usable as region subtags. Also, the "exceptionally reserved" alpha-2 codes defined in ISO 3166-1 (with the exception of UK) are also usable as region subtags for language tags. However, newer stability policies (agreed with ISO) have been implemented to avoid deleting ...
Some of these codes were specified in older versions of the ISO list. uk (United Kingdom): The ISO 3166-1 code for the United Kingdom is GB (Great Britain). However, the JANET network had already selected uk as a top-level identifier for its pre-existing Name Registration Scheme , and this was incorporated into the DNS root.
Countries or areas, codes and abbreviations — list of alpha-3 and numeric codes (a few territories officially assigned codes in ISO 3166-1 are not included in this list) Composition of macro geographical (continental) regions, geographical sub-regions, and selected economic and other groupings
A public IP address is a globally routable unicast IP address, meaning that the address is not an address reserved for use in private networks, such as those reserved by RFC 1918, or the various IPv6 address formats of local scope or site-local scope, for example for link-local addressing. Public IP addresses may be used for communication ...
ISO 3166-1 (Codes for the representation of names of countries and their subdivisions – Part 1: Country code) is a standard defining codes for the names of countries, dependent territories, and special areas of geographical interest.