+1670 Country Code

+1670 is the international dialing code for Northern Mariana Islands. When making a call to Northern Mariana Islands from abroad, you need to dial +1670 before the local phone number.

Country using +1670

This dialing code is used by Northern Mariana Islands.

Northern Mariana Islands

1. 1Start with +1670
2. 2Add the rest of the local number in international format
3. 3Make sure the number belongs to Northern Mariana Islands before placing the call

Common mistakes with +1670

• Do not omit the country code when dialing internationally.
• Use the number in international format rather than mixing local and international prefixes.
• Make sure the rest of the number matches a valid number in Northern Mariana Islands.

Example Number