How to Call Northern Mariana Islands
Everything you need to know about calling Northern Mariana Islands — the country code, dialing format, costs, and the cheapest way to connect.
Know the country code
The international dialing code for Northern Mariana Islands is +1670. Every call to Northern Mariana Islands from abroad must start with this code.
Format the phone number
Drop the leading 0 from the local number, then add the country code:
+1670 + local number (without 0)
Choose how to call
Dial and connect
Whether you’re staying in touch with family overseas, the call takes seconds to connect. With EzyRing, your own phone number shows as caller ID — people in Northern Mariana Islandssee it’s you.
Frequently Asked Questions
How do I call Northern Mariana Islands from the US?
Dial +1670 followed by the local number (drop the leading 0). From a landline: 011 1670 + local number. With EzyRing, just type +1670 + local number in your browser.
How do I call Northern Mariana Islands from the UK?
From the UK, dial 00 1670 followed by the local number. Or use EzyRing to call from your browser at $0.116/min.
What is the cheapest way to call Northern Mariana Islands?
The cheapest way to call Northern Mariana Islands is through a browser-based VoIP service. EzyRing charges $0.116/min with no connection fees, no subscription, and credits that never expire. A $5 top-up gives ~43 minutes.
What is the country code for Northern Mariana Islands?
The international dialing code for Northern Mariana Islands is +1670. This code must be dialed before the local phone number when calling from outside Northern Mariana Islands.
Can I call Northern Mariana Islands for free?
You can make free app-to-app calls (WhatsApp, FaceTime) if the other person has the same app. To call actual Northern Mariana Islands phone numbers (landlines/mobiles), a paid VoIP service like EzyRing offers the cheapest rates from $0.116/min.