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The Internet country code top-level domain .io is nominally assigned to the British Indian Ocean Territory. [1] The domain is managed by Internet Computer Bureau Ltd, a domain name registry , with registrar services provided by Name.com .
In 2018, the Internet Assigned Numbers Authority (IANA) began implementing internationalized country code top-level domains, consisting of language-native characters when displayed in an end-user application. Creation and delegation of ccTLDs is described in RFC 1591, corresponding to ISO 3166-1 alpha-2 country codes.
The sortable table below contains the three sets of ISO 3166-1 country codes for each of its 249 countries, links to the ISO 3166-2 country subdivision codes, and the Internet country code top-level domains (ccTLD) which are based on the ISO 3166-1 alpha-2 standard with the few exceptions noted. See the ISO 3166-3 standard for former country codes.
As of 20 May 2017, there were 255 country-code top-level domains, purely in the Latin alphabet, using two-character codes. As of June 2022 [update] , the number was 316, with the addition of internationalized domains.
The United Nations uses a combination of ISO 3166-1 alpha-2 and alpha-3 codes, along with codes that pre-date the creation of ISO 3166, for international vehicle registration codes, which are codes used to identify the issuing country of a vehicle registration plate; some of these codes are currently indeterminately reserved in ISO 3166-1.
The .io (Indian Ocean) country-code top-level domain was delegated by the Internet Assigned Numbers Authority (IANA) to British entrepreneur Paul Kane in 1997, and was operated for private benefit under the trade name 'Internet Computer Bureau' from 1997 until 2017. [112]
It defines three sets of country codes: [1] ISO 3166-1 alpha-2 – two-letter country codes which are used most prominently for the Internet's country code top-level domains (with a few exceptions). ISO 3166-1 alpha-3 – three-letter country codes which allow a better visual association between the codes and the country names than the alpha-2 ...
.io, the Internet country code top-level domain (ccTLD) for the British Indian Ocean Territory; Io (programming language), a pure object-oriented programming language; IO.SYS, a system file in Microsoft DOS and Windows 95, 98 and ME; Indistinguishability obfuscation, a cryptographic tool to obscure computer code