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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.
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.
It is a closed numbering plan, [1] which means that all telephone numbers, including the area code, have a fixed number of digits. Swiss area codes are officially termed national destination codes (NDC). A complete telephone number consists of ten digits: 0xx xxx xx xx. Two formats are distinguished: three digits for the NDC and seven digits ...
The 02 code was used for calls to the Republic of Moldova. In 1993, the other counties were given new area codes (30 to 69). The previous area code system did not follow the country administrative regions. Outside county dialing required a national access code 0 (01-xxx-xxxx to Bucharest and 0pp-xxx-xxx for the rest of the
00 + Country Code + Destination Code + Subscriber Number. Calls to North America from anywhere in Armenia receive a substantial discount if preceded by a special code specific to each Armenian phone company. For example, if one makes a call from a Vivacell-MTS phone to North America and dials 77 first, one is charged 14 AMD per minute.
The 4 digit prefix of an IRM (known as an IRM network identifier) is allocated by IFAST that attempts to facilitate international roaming by minimizing conflicts with North American MIN codes that are based on the national 10 digit phone number. The last 6 digits of an IRM are allocated by the carrier, providing one million unique identifiers.
IS-41, also known as ANSI-41, [1] is a mobile, cellular telecommunications system standard to support mobility management by enabling the networking of switches. ANSI-41 is the standard now approved for use as the network-side companion to the wireless-side AMPS (analog), IS-136 ( Digital AMPS ), cdmaOne , and CDMA2000 networks.
Taiwan, [II] [i] officially the Republic of China (ROC), [I] is a country [26] in East Asia. [l] The main island of Taiwan, also known as Formosa, lies between the East and South China Sea in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south.