| Country Calling Code |
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This is a list of country calling codes defined by ITU-T recommendation E.164 . AT A GLANCE IN DEPTH Zone 1 – North American Numbering Plan Area Areas within NANPA (North American Numbering Plan Area) have been assigned area codes as if they were all areas within one country. The codes below in format +1-XXX represent that area code within the +1 NANPA--Not a separate country code. For example, the country code for Guam is +1 followed by the area code 671--not +671.
For more information please see nanpa.com Zone 2 – Mostly Africa
Zone 3 – Europe
Zone 4 – Europe
Zone 5 – Mexico , Central and South America , West Indies
Zone 6 – South Pacific and Oceania
Zone 7 – Russia and its vicinity (former Soviet Union )
Zone 8 – East Asia and Special Services
Zone 9 – West , South and Central Asia , Middle East
Zone 0 – unassigned HISTORY CCITT, the predecessor of the ITU Telecommunication Standardization Sector (ITU-T), developed the first formal list of telephone country codes. This list was included in the '' 1964 CCITT Blue Book'', among other international telecommunication recommendations, which would eventually become ITU-T recommendation E.164 . An earlier system of country codes for European use was mentioned in the '' 1960 CCITT Red Book''. Some of these country codes were retained in the CCITT country code assignments and remain in effect (e.g. France +33, United Kingdom +44). For further details on country code history and development, see ''History of Country Codes'' ( WTNG ). SEE ALSO EXTERNAL LINKS
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