How to call Northern Mariana Islands🇲🇵
To call Northern Mariana Islands from USA, just follow:
- First dial 011, the USA exit code.
- Next dial 1-670, the Northern Mariana Islands country code.
- Then dial the 7 digits phone number.
Content of how to call Northern Mariana Islands
- Quick hint how to call Northern Mariana Islands
- About Northern Mariana Islands
- Northern Mariana Islands timezone
- How to call inside Northern Mariana Islands
- How to call Northern Mariana Islands from a mobile phone
- How to call Northern Mariana Islands from a landline phone
- How to call Northern Mariana Islands from office
- How to call Northern Mariana Islands cheaper
- How to call Northern Mariana Islands from other countries (with examples)
About Northern Mariana Islands

The international country code is 1-670. It will allow you to call Northern Mariana Islands from another country. Northern Mariana Islands telephone code 1-670 is dialed after the international direct dialing ( IDD).
Northern Mariana Islands trunk prefix is 1. It will allow you to make calls inside Northern Mariana Islands.
The Northern Mariana Islands area code table below shows the various city codes for Northern Mariana Islands.
Local timezone
The time in Northern Mariana Islands is 10:58 (GMT+10)
How to make local calls
To make a local call inside Northern Mariana Islands you should use the trunk prefix. Northern Mariana Islands trunk prefix is 1. National mask phone number is .
If you are using a local sim card, you only need to dial 1 - phone number.
Instruction | Example |
---|---|
1 - 7 digits phone number | 1 and 7 digits |
To call Northern Mariana Islands from USA, just follow these dialing instructions:
- First dial 011, the USA exit code.
- Next dial 1-670, the Northern Mariana Islands country code.
- Then dial the 7 digits phone number.
How to call Northern Mariana Islands from a mobile phone
Instruction for calling from US | Example |
---|---|
011 - 1-670 - 7 digits phone number | 011 1-670 and 7 digits |
+ 1-670 - 7 digits phone number | + 1-670 and 7 digits |
How to call Northern Mariana Islands from a landline phone
Instruction for US | Example for US |
---|---|
011 - 1-670 - 7 digits phone number | 011 1-670 and 7 digits |
How to call Northern Mariana Islands from office
In case you need to call from an office, you must first dial the phone code in the office to reach the local connection. After a long beep dial 1-670, wait for the beep again. Then enter the area code and phone number. In some offices, you do not need to dial a code to enter a city connection.
Instruction for calling from US | Example |
---|---|
exit code to local line - 011 - 1-670 - 7 digits phone number | 9 011 1-670 and 7 digits |
How to call Northern Mariana Islands cheaper
The best way to make calls cheaper is using VoIP or apps with VoIP technology like Skype, Viber and etc. Some VoIP service allow you to skip dialing exit code before placing an international call. If this feature is turned on, just leave out the country exit code. To call Northern Mariana Islands from the Skype app, just follow these dialing instructions:
- First type + 1-670, the Northern Mariana Islands country code.
- Then dial the 7 digits phone number.
Instruction for US | Example for US |
---|---|
+ 1-670 - 7 digits phone number | + 1-670 and 7 digits |