North American Numbering Plan (NANP) and E.164 Recommendations

The following is a map of international calling codes from around the world:

Zone 1:  NANP countries and territories

Numbers beginning with +1 represent North America and mostly Caribbean island countries, not including Mexico or Central America. They are further broken down into NPA’s (Numbering Plan Area codes).

• American Samoa
• Anguilla
• Antigua and Barbuda
• Bahamas
• Barbados
• Bermuda
• British Virgin Islands
• Canada
• Cayman Islands
• Dominica
• Dominican Republic
• Grenada
• Guam
• Jamaica
• Montserrat
• Northern Mariana Islands
• Puerto Rico
• Saint Kitts and Nevis
• Saint Lucia
• Saint Vincent and the Grenadines
• Sint Maarten^[4]
• Trinidad and Tobago
• Turks and Caicos Islands
• United States
• United States Virgin Islands

Zone 2 – Mostly Africa (but also, for example Aruba, Faroe Islands and Greenland)

Numbers beginning with +2 denote mostly African countries, some Atlantic and Indian Ocean islands as well. Aside from +20 which is Egypt, typically these countries or areas will use the full three digits in the CC (Country Code) section of the E.164 number:  +2XX

Zones 3/4 – Europe

Originally larger countries, such as the United Kingdom or France, were assigned two-digit codes (to compensate for their usually longer domestic numbers) and small countries, such as Iceland, were assigned three-digit codes; however, since the 1980s, all new assignments have been three-digit regardless of countries’ populations.

These countries typically utilize 2 or 3 digits in the CC field:  +3X or +3XX  &  +4X or +4XX.

Zone 5 – Mostly Latin America

Numbers beginning with +5 denote Mexico, Central America and South America countries. These countries have 2 or 3 digits in the CC field:  +5X or +5XX

Zone 6 – Southeast Asia and Oceania

Numbers beginning with +6 denote Southeast Asia and Oceania countries. These countries have 2 or 3 digits in the CC field:  +6X or +6XX

Zone 7 – Eurasia (former Soviet Union)

Numbers beginning with +7 denote former Soviet Union countries such as Russia and Kazakhstan.

Zone 8 – East Asia and Special Services

Numbers beginning with +8 denote East Asia countries and Special Services numbers. These countries have 2 or 3 digits in the CC field: +8X or +8XX

Zone 9 – Central, South and Western Asia

Numbers beginning with +9 denote West, South and Central Asian countries. These countries have 2 or 3 digits in the CC field:  +9X or +9XX

References