HowtoCallAbroad.com

How to call Northern Mariana from the USA/Canada:

dial 1 + 670 + local phone number
Calling from another country?

The time in Northern Mariana Islands is now 11:54:39am

Calling Northern Mariana Islands from the United States explained:

  • 1 - Country Code for Northern Mariana Islands
  • 670 - area code within the NANP
  • local phone number - 7 digits
  • US to Northern Mariana Islands international dialing format: 1 670 ??? ????
  • this US territory is part of the North American Numbering Plan - NANP (calling it works like a US state to state call)

Phone Books: