Northern Mariana Islands country code (prefix) or dialing code with an interactive map and travel information to explore Northern Mariana Islands.
The + initiates an international call, followed by the country code (here 1670 for Northern Mariana Islands). Alternatively, in most countries (with some exceptions, for example, USA, Canada, Australia, and Russia) 00 can also be used to initiate a foreign call.
| +1670 ... ....... | International format (recommended, always possible) | |
| 00 1670 ... ....... | From most European countries | |
| 011 1670 ... ....... | From the USA | |
| 011 1670 ... ....... | From Canada | |
| 0011 1670 ... ....... | From Australia | |
| 810 1670 ... ....... | From Russia, Belarus, Georgia, Kazakhstan, Moldova, Tajikistan, Uzbekistan | |
| 119 1670 ... ....... | From Cuba |