Mariana Island Phone Number Format
Country code +1670 — Complete guide to Mariana Island phone number formats, mobile and landline structures, and area codes.
Number Format Overview
Phone numbers in Mariana Island use the international country code +1670. When dialing from outside Mariana Island, you must include this country code before the local number.
International Format
+1670 [area code] [local number]
From the United States
011 1670 [area code] [local number]
When dialing a number within Mariana Island, local dialing rules apply. You may need to include a trunk prefix (often 0) before the area code for domestic calls, but you should omit this prefix when dialing internationally.
Mobile vs. Landline Numbers
Mobile Numbers
Mobile phone numbers in Mariana Island typically:
- Begin with specific mobile prefixes
- May have a different length than landline numbers
- Are often 8-10 digits after the country code
+1670 XX XXXX XXXX
Landline Numbers
Landline numbers in Mariana Island typically:
- Start with a geographic area code
- Area codes identify the city or region
- Total length varies by area code
+1670 (area) XXXX XXXX
Example Phone Numbers
These are example formats only and are not real phone numbers:
| Type | Local Format | International Format | From US |
|---|---|---|---|
| Landline (Saipan) | (0XX) XXXX XXXX |
+1670 XX XXXX XXXX |
011 1670 XX XXXX XXXX |
| Mobile | 0XXX XXX XXXX |
+1670 XXX XXX XXXX |
011 1670 XXX XXX XXXX |
| Toll-Free | 0800 XXX XXXX |
+1670 800 XXX XXXX |
011 1670 800 XXX XXXX |
Dialing Tips
- Remove the leading zero: When dialing internationally, drop the trunk prefix (usually 0) that is used for domestic calls in Mariana Island.
- Use the + notation: From a US mobile phone, use
+1670instead of011 1670. - Verify the number length: Make sure you have the correct number of digits. If your call does not connect, check whether you need to add or remove an area code digit.
- Save contacts in international format: Always store phone numbers with the full
+1670prefix so they work from any country.
Mariana Island Quick Info
| Country Code | +1670 |
|---|---|
| ISO Code | MP |
| Capital | Saipan |
| International Prefix | 011 (from US) |
Nearby Countries
- Guadeloupe +590
- Palau +680
- Micronesia +691
- Japan +81
- South Korea +82
- Philippines +63