Northern Mariana Islands Phone Number Format
Country code +1 · ISO MP
How to format, dial, and validate Northern Mariana Islands phone numbers, with live examples.
Country Code
+1
National Prefix
1
International Prefix
011
Mobile Portability
No
Try it now
Pre-filled with a valid fixed line number for Northern Mariana Islands. Edit it and click "Try It" to see the parsed result.
Number Types & Example Formats
Each Northern Mariana Islands phone-number type supported by libphonenumber, with a real example formatted three ways.
| Type | Length | National | International | E.164 |
|---|---|---|---|---|
| Fixed Line | 10 digits | (670) 234-5678 | +1 670-234-5678 | +16702345678 |
| Mobile | 10 digits | (670) 234-5678 | +1 670-234-5678 | +16702345678 |
| Personal Number | 10 digits | (500) 234-5678 | +1 500-234-5678 | +15002345678 |
| Premium Rate | 10 digits | (900) 212-3456 | +1 900-212-3456 | +19002123456 |
| Toll Free | 10 digits | (800) 212-3456 | +1 800-212-3456 | +18002123456 |
How to Dial Northern Mariana Islands Numbers
From abroad
Dial +1 followed by the national number, dropping any leading 1.
Within Northern Mariana Islands
Dial 1 before the local number to make a domestic call.
Dialing out of Northern Mariana Islands
Dial 011 followed by the destination country code and number.
Area Codes
Browse Northern Mariana Islands area codes with cities, timezones, and example numbers for each.
Validate a Northern Mariana Islands Number with the API
Send the number to the free libphonenumber API to get the parsed country, type, formatting, and validity.
curl https://libphonenumberapi.com/api/phone-numbers/+16702345678Frequently Asked Questions
What is the country code for Northern Mariana Islands?
└ The international country code for Northern Mariana Islands is +1. Use this prefix when dialing Northern Mariana Islands numbers from another country.
How long is a Northern Mariana Islands phone number?
└ Northern Mariana Islands phone numbers are typically 10 digits, not including the +1 country code.
How do I dial a Northern Mariana Islands phone number from abroad?
└ From abroad, dial +1 followed by the national number, dropping any leading 1. Within Northern Mariana Islands, dial 1 before the local number.
How do I validate a Northern Mariana Islands phone number programmatically?
└ Send a GET request to https://libphonenumberapi.com/api/phone-numbers/<number>. The free libphonenumber API returns the parsed country, format, type, and validity for any number — no API key required.
Other Countries with Dialing Code +1
These countries share the same international dialing prefix as Northern Mariana Islands.
- American Samoa +1
- Anguilla +1
- Antigua and Barbuda +1
- Bahamas +1
- Barbados +1
- Bermuda +1
- British Virgin Islands +1
- Canada +1
- Cayman Islands +1
- Dominica +1
- Dominican Republic +1
- Grenada +1
- Guam +1
- Jamaica +1
- Montserrat +1
- Puerto Rico +1
- Saint Kitts and Nevis +1
- Saint Lucia +1
- Saint Vincent and the Grenadines +1
- Sint Maarten +1
- Trinidad and Tobago +1
- Turks and Caicos Islands +1
- U.S. Virgin Islands +1
- United States +1