+1-670 — Northern Mariana Islands
+1-670 is the international calling code for Northern Mariana Islands. Here's everything you need to know about dialing Northern Mariana Islands from abroad.
How to Dial +1-670 (Northern Mariana Islands)
Dial exit code
From the US or Canada, dial 011 (or use + on mobile). From the UK, dial 00. Most countries use 00 as the international access code.
Dial the country code +1 (670)
Enter 1 670 — this tells the phone network you're calling Northern Mariana Islands.
Dial the local number
Enter the subscriber's local phone number. Drop any leading 0 from the local number — the country code replaces it.
+1670 XXX XXXX Replace X's with the local number Before you call
Tips for Calling Northern Mariana Islands
Drop the Leading Zero
When dialing internationally, remove the leading 0 from the local number. So if the local number is 0XX XXX XXXX, dial +1-670 XX XXX XXXX.
Use + Instead of Exit Code
On mobile phones, use the + symbol (hold 0 or press * twice) instead of your country's exit code. It works from anywhere in the world.
Save Money with VoIP
Traditional carriers charge $1-3/min for international calls. VoIP services like CheapCalls.cloud offer rates from $0.01/min — saving you up to 95%.
Check the Time Zone
Always check what time it is in Northern Mariana Islands before calling. A badly-timed call at 3 AM won't be appreciated no matter how cheap the rate.
Frequently Asked Questions
What country uses the +1-670 calling code?
The +1-670 calling code is assigned to Northern Mariana Islands. When dialing internationally, use +1-670 followed by the local phone number.
How do I dial a +1-670 number from the US?
From a US phone, dial 011 1 670 followed by the local number. From a mobile, you can use the + format: +1-670 then the local number. With CheapCalls.cloud, just enter the full number starting with +1-670 — we handle the rest.
How do I call Northern Mariana Islands cheaply?
Use a VoIP service like CheapCalls.cloud for the lowest rates to Northern Mariana Islands. Internet-based calls are typically 80-90% cheaper than traditional carrier rates. No special equipment needed — just a browser or phone app.
Is +1-670 a mobile or landline code?
+1-670 is the country code for Northern Mariana Islands, not a mobile or landline indicator. Within Northern Mariana Islands, mobile and landline numbers have different local prefixes after the +1-670 country code.
What time zone is Northern Mariana Islands in?
Check the current time in Northern Mariana Islands before calling to avoid inconvenient hours. Business hours are typically 9 AM – 6 PM local time. CheapCalls.cloud charges the same low rate 24/7 — no peak or off-peak pricing.
Other Pacific Country Codes
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