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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.
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.
Codes are known as yóu dì qū hào (郵遞區號), and are also assigned to Senkaku Islands (Diaoyutai), though Japanese-administered, Pratas Island and the Spratly Islands. NNN-NNN 3+3 digit codes were launched on March 3, 2020. See List of postal codes in Taiwan. Tajikistan: TJ: NNNNNN Retained system from former Soviet Union. First two ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as "country dial-in codes", or historically "international subscriber dialing" (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.
This is a list of FIPS 10-4 country codes for Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions. The two-letter country codes were used by the US government for geographical data processing in many publications, such as the CIA World Factbook .
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)
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To be an effective anti-phishing tool, the MUA (Mail User Agent or Mail Client) will need to be modified to display either the pra for Sender ID, or the Return-Path: header field for SPF. The pra tries to counter the problem of phishing , while SPF or mfrom tries to counter the problem of spam bounces and other auto-replies to forged Return-Paths.