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Country codes are defined by the International Telecommunication Union (ITU) in ITU-T standards E.123 and E.164. The prefixes enable international direct dialing (IDD). Country codes constitute the international telephone numbering plan. They are used only when dialing a telephone number in a country or world region other than the caller's.
The ISO 3166 codes are used by the United Nations and for Internet top-level country code domains. Non-sovereign entities are in italics. On September 2, 2008, FIPS 10-4 was one of ten standards withdrawn by NIST as a Federal Information Processing Standard.
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) UIC country code (International Union of Railways) List ...
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.
There are generally two widely accepted versions of a postal code: a ZIP code and a ZIP + 4 code. Established in 1963, ZIP codes are the most common and recognizable postal code used by the USPS.
99x, where x is a carrier selection code: Finland, alongside the standard prefix 00 for the default carrier, carrier selection code consisting of either a single digit (1–4, 6–9) or three digits (511–599) [1] 99 0 – Telia Finland Oyj; 99 1 – Elisa Oyj; 99 511 – Nettia Oy; 99 533 – DNA Oyj; 99 555 – DNA Oyj; 99 559 – Elisa Oyj ...
Notes ^ RC is Taiwan, VH is Hong Kong, VM is Macao Christmas Island (territory of Australia) ISO 3166-1 numeric 162 ISO 3166-1 alpha-3 CXR ISO 3166-1 alpha-2 CX ICAO airport code prefix YP E.164 code 61 IOC country code — Country code top-level domain.cx ICAO aircraft regis. prefix VH- E.212 mobile country code 505 NATO three-letter code CXR NATO two-letter code KT LOC MARC code XA ITU ...
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.