Mariana Island Phone Number Format

Phone numbers in Mariana Island have 10 digits after the country code +1. The country is part of the North American Numbering Plan: a 3-digit area code and a 7-digit number, written (670) XXX-XXXX. From the US, dial 1 + the 10 digits, with no 011.

Country code	+1
Digits after +1	10 digits
Trunk prefix (domestic calls)	1, for long-distance calls
Mobile numbers start with	Same digits as landlines
Exit code (to call abroad from Mariana Island)	011
Dial from the US	1 670-XXX-XXXX

X stands for any digit. Source: libphonenumber metadata (phonenumbers 9.0.40), Google's open numbering data.

Checking a number from Mariana Island? The phone number checker tells you if it is valid, mobile or landline, and gives its international format.

How many digits does a phone number in Mariana Island have?

Phone numbers in Mariana Island have 10 digits after the country code +1.

Can you tell a mobile number from a landline in Mariana Island?

No. In the North American Numbering Plan, mobile and landline numbers share the same area codes and exchanges, so the number alone doesn't tell you which it is.

How do I write a phone number from Mariana Island in international format?

Start with +1, then the national number. For example, a mobile number written (670) XXX-XXXX at home becomes +1 670-XXX-XXXX. From a US landline, dial 1 670-XXX-XXXX.