Area code 670
Where the 670 area code is, its overlay and how to dial a +1 670 number from anywhere.
The 670 area code is in Northern Mariana Islands, United States ((UTC+10)). To call from abroad: +1 670 555-0123.
The 670 area code is a geographic North American Numbering Plan (NANP) code covering Northern Mariana Islands. It has been in service since 04-Sep-1996 and sits in the (UTC+10) time zone.
How to dial a 670 number
+1 670 555-01231 670 555-0123Frequently asked questions
Where is the 670 area code?
The 670 area code is in Northern Mariana Islands, United States ((UTC+10)).
Do I have to dial 10 digits for 670?
Local calls within 670 may use seven digits; ten-digit dialling always works.
How do I call a 670 number from another country?
Dial your exit code (or +), then 1, then 670, then the number: +1 670 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 670 number does not pinpoint a street or ZIP code.
Who issues +1 670 numbers
Phone companies hold blocks of numbers in each area code. The main holders in 670:
About 9.8% of the 51 prefixes in use belong to mobile carriers: a 670 number is often a cell phone, and it may have moved to another carrier since.
Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.
All US area codes United States +1 Map of area code 670 — cities & rate centres