Northern Mariana Islands +1 670
To call Northern Mariana Islands from abroad, dial your exit code (or +), then 1 670, then the local number without its leading 1. Written in full: +1 670-234-5678.
The country calling code for Northern Mariana Islands is +1. A number starting +1 or 001 is a call to or from Northern Mariana Islands. From abroad: +1 670-234-5678.
To call Northern Mariana Islands from abroad, dial your exit code (or +), then 1, then the local number without its leading 1. The +1 code identifies the country; the following digits identify the line (landline or mobile).
How to call Northern Mariana Islands from abroad
011 1 670-234-567800 1 670-234-56780011 1 670-234-5678+1 670-234-5678670-234-5678 is a real-format Northern Mariana Islands mobile number (example from the ITU-T numbering plan): replace it with the number you were given, without its leading 1.
Northern Mariana Islands area codes
In Northern Mariana Islands, landlines usually include an area code after +1 (without its leading 1). Mobiles have no area code.
Number format
(670) 234-5678from abroad+1 670-234-5678(670) 234-5678from abroad+1 670-234-5678Landline numbers in Northern Mariana Islands have 10 digits after the country code; mobile numbers have 10 digits and start with 670. The national prefix 1 is only dialled inside the country — drop it after +1.
Calling abroad from Northern Mariana Islands
To call another country from Northern Mariana Islands, dial the exit code 011 (or + on a mobile), then the country code, then the number. From Northern Mariana Islands to the United States, for example: 011 1 201 555 0123.
A Northern Mariana Islands number in international format is written +1 …. The + stands for the exit prefix (00 in much of the world, 011 in North America). Switching to international format, drop the leading 1.
Cheapest ways to call Northern Mariana Islands
With internet on both ends, apps like WhatsApp, Signal or FaceTime call Northern Mariana Islands for free. To reach a number without an app, VoIP services are usually cheaper than your operator’s international rate.
Frequently asked questions
What country has the code +1?
Northern Mariana Islands has the country calling code +1.
How do I call Northern Mariana Islands from the United States?
Dial 011, then 1, then the local number without its leading 1 — for example 011 670-234-5678.
What does +1 mean?
It is the international dialing code for Northern Mariana Islands. The + stands for your exit code (00 in much of the world, 011 in North America).
Is +1 mobile or landline?
The +1 code identifies the country, not the line type; Northern Mariana Islands landlines and mobiles share it.
A country code covers a whole nation; the full number depends on the city and operator.
Mobile network codes in Northern Mariana Islands
Every mobile network is identified by a mobile country code (MCC) and a mobile network code (MNC). They appear on your phone when it roams, in SIM settings and in any network lookup. Northern Mariana Islands has 2 network operators with their own infrastructure:
| Network | MCC-MNC | Technologies | Subscribers |
|---|---|---|---|
| Docomo PacificNTT Docomo | 310-370 | 2G · 3G · 4G | — |
| IT&EIT&E Overseas Inc | 310-110 | 2G · 3G · 4G | — |
A struck-through generation has been switched off on that network. MCC-MNC: ITU-T E.212 codes as listed on Wikipedia.
Received a call from a Northern Mariana Islands number? Check it with the phone number lookup: type of line, format and local time.
Source: Wikipedia — lists of mobile network operators, mobile network codes, 2G and 3G phase-out, mobile number portability (CC BY-SA 4.0). Subscriber counts as published by each operator or regulator at the date shown.