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This is a list of countries by IPv4 address allocation, as of 2 April 2012 [update]. It includes 252 areas, including all United Nations member states, plus the Holy See, Kosovo and Taiwan. There are 2 32 (over four billion) IP addresses in the IPv4 protocol. Of these, almost 600 million are reserved and cannot be used for public routing.
Country code top-level domain. A country code top-level domain (ccTLD) is an Internet top-level domain generally used or reserved for a country, sovereign state, or dependent territory identified with a country code. All ASCII ccTLD identifiers are two letters long, and all two-letter top-level domains are ccTLDs.
See the ISO 3166-3 standard for former country codes. British Virgin Islands – See Virgin Islands (British). Burma – See Myanmar. Cape Verde – See Cabo Verde. Caribbean Netherlands – See Bonaire, Sint Eustatius and Saba. China, The Republic of – See Taiwan (Province of China). Democratic People's Republic of Korea – See Korea, The ...
This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet. A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. [ 1 ]
ISO 3166-1 alpha-2 codes are two-letter country codes defined in ISO 3166-1, part of the ISO 3166 standard [1] published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and special areas of geographical interest. They are the most widely used of the country codes published by ISO (the ...
An Internet Protocol address (IP address) is a numerical label such as 192.0.2.1 that is assigned to a device connected to a computer network that uses the Internet Protocol for communication. [ 1 ][ 2 ] IP addresses serve two main functions: network interface identification, and location addressing. Internet Protocol version 4 (IPv4) defines ...
Country code. A country code is a short alphanumeric identification code for countries and dependent areas. Its primary use is in data processing and communications. Several identification systems have been developed. The term country code frequently refers to ISO 3166-1 alpha-2, as well as the telephone country code, which is embodied in the E ...
Lists of country codes. This is a listing of lists of country codes: List of ISO country codes (ISO 3166) ITU country code (International Telecommunication Union) List of country calling codes E.164. Mobile country code E.212. Maritime identification digits. List of ITU letter codes (radiocommunication division)