The Northern Mariana Islands country code is +1 — the SAME North American Numbering Plan +1 as the US, reached through the single nationwide area code 670. A US commonwealth in the western Pacific just north of Guam, ~50,000 residents who are US citizens. CNMI business + bank verifications all expect +1 670.
The Northern Mariana Islands share the +1 country code of the North American Numbering Plan with the US. The CNMI is reached with +1 followed by the single nationwide area code — 670 — that covers the whole commonwealth, then a 7-digit local number.
The Northern Mariana Islands do NOT have a unique country code — the CNMI is part of the North American Numbering Plan (NANP) and uses <b>+1</b>, the same code as the US mainland. A CNMI number is <b>+1</b> followed by its single area code — <b>670</b> — then a 7-digit local number: <code>+1 670 123 4567</code> = 10 digits after +1. From the US mainland you reach the CNMI like a domestic call (dial 1 + 670 + number, no 011), since it is a US commonwealth, though it sits far out in the western Pacific. ITU zone 7.
The CNMI is a <b>commonwealth in political union with the United States</b> — its residents are <b>US citizens</b>. The capital is <b>Saipan</b> (the seat of government is at Capitol Hill, Saipan). The currency is the <b>US dollar (USD)</b>. Official languages are <b>English, Chamorro + Carolinian</b>. Two carriers serve the islands: <b>IT&E</b> + <b>Docomo Pacific</b>, both issuing mobile numbers on the 670 area code.
The CNMI uses a single nationwide area code: <b>670</b>. It covers the entire commonwealth — a chain of 14 islands just north of Guam, with the main inhabited ones being <b>Saipan</b>, <b>Tinian</b> + <b>Rota</b>. Unlike a city code, 670 is not tied to one town; every CNMI landline + mobile lives behind +1 670. Ten-digit dialing (670 + number) is the norm.
From Tinian's North Field, the B-29 bombers — including the Enola Gay — launched the World War II atomic-bomb missions, and Saipan saw fierce 1944 battles. Today the CNMI is defined by tourism (largely from China, Korea + Japan), reef diving (Saipan's Grotto is world-famous) + living Chamorro and Carolinian culture. The Mariana Trench, the deepest place in the ocean, lies nearby. CNMI businesses verify with +1 670 mobile OTPs.
A CNMI phone number in international format is written as +1 670 [7-digit local]. Example: +1 670 123 4567. The single area code 670 is a nationwide overlay covering all the inhabited islands — Saipan, Tinian + Rota — so there is no leading 0 to drop + no per-city code.
Because the CNMI is part of the NANP, from the US mainland you simply dial 1 + 670 + 7 digits (no 011 prefix needed) — it is a domestic call within the +1 plan. From everywhere else you dial your exit code, then 1, then 670 + number. On any mobile, + replaces the exit code: +1 670 123 4567 works worldwide.
From Garapan on Saipan to Songsong on Rota, every CNMI number lives behind +1 with the 670 area code. One nationwide code covers all the inhabited islands — pick it to sound local across the whole commonwealth.
Because the CNMI is part of the NANP, callers on the US mainland dial it as a domestic call: 1 + 670 + number, no 011. From everywhere else, use your exit code then 1. From any mobile, + replaces the exit code — so +1 670 123 4567 works worldwide. There is no leading 0 to drop.
11 670 XXX XXXX+1 670 XXX XXXX011011 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX00110011 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX010010 1 670 XXX XXXX+1 670 XXX XXXX001001 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX11 670 XXX XXXX+1 670 XXX XXXX001001 1 670 XXX XXXX+1 670 XXX XXXX001001 1 670 XXX XXXX+1 670 XXX XXXX002002 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX0000 1 670 XXX XXXX+1 670 XXX XXXX00 2100 21 1 670 XXX XXXX+1 670 XXX XXXXTip: The single CNMI area code — 670 — is a nationwide overlay covering all the inhabited islands (Saipan, Tinian + Rota), so it reaches any CNMI phone. From the US mainland you do NOT dial 011; the CNMI is within the +1 NANP and the call is treated as domestic.
+1 670 reaches a US commonwealth in the western Pacific — Saipan, Tinian + Rota. CNMI banks, hospitality operators + government services all verify + connect with +1 670.
CNMI banks (Bank of Saipan, Bank of Guam, BankPacific), wallets + government services verify with +1 670 mobile OTPs. A local CNMI number lets you receive those codes + sign up for island services from anywhere.
Because the CNMI shares the +1 NANP with the US, mainland callers dial it as a domestic call — just 1 + 670 + number, no 011, no exit-code fuss. A +1 670 line feels effortless to reach from anywhere in the United States.
The CNMI uses the US dollar + its residents are US citizens, so a +1 670 number plugs straight into US-denominated commerce, payroll + federal services on the islands — no currency conversion, no foreign-number friction.
CNMI tourism — largely from China, Korea + Japan — drives the economy. Saipan resorts, dive operators (the Grotto), tour desks + villa rentals all run on +1 670 lines, essential for any hospitality or travel business serving island guests.
The CNMI government, the seat at Capitol Hill in Saipan + federal agencies on the islands publish +1 670 numbers. A local line keeps you reachable for permits, licensing, community + civic business across the commonwealth.
The CNMI runs on Chamorro Standard Time (ChST, UTC+10) year-round with no DST — the same clock as neighbouring Guam + closely aligned with East Asian business hours (Japan, Korea, eastern China), so calls land in convenient windows.
Pick a +1 670 number — one code covers Saipan, Tinian + Rota — and start calling, texting + receiving CNMI bank + business OTPs from real island customers.
Same six features come standard on every CallMama Northern Mariana Islands number — no upsell tiers, no per-feature charges.
Route any incoming call to your real mobile, a teammate, or voicemail — by schedule, caller, or custom rule.
One-tap recording for client calls and consults. Files store securely in your dashboard for replay or download.
Decide which local number shows on outbound calls so contacts always see a familiar prefix.
Voicemails arrive as audio plus a written transcript in your inbox — read or listen, no missed message.
Send and receive text and image messages from your number — same line works on web, iOS, and Android.
Outbound calls to 200+ countries from the same app. Skip carrier roaming and international add-ons.
From "I want a Northern Mariana Islands number" to making your first call — three taps and you're live.
Choose the area code or city prefix that matches where you sell.
Six-digit confirmation drops into the app. No documents to upload, no waiting room, no callbacks.
Your Northern Mariana Islands line is live. Start dialing, texting, and being reached — exactly the way a local would.
Name, country code, ISO 3166 alpha-2 & alpha-3, exit code, and ITU zone. Filter by continent or search by name or code.
| Country | Code | ISO-2 | ISO-3 | Exit | Zone |
|---|---|---|---|---|---|
| Afghanistan | +93 | AF | AFG | 00 | 9 |
| Albania | +355 | AL | ALB | 00 | 3 |
| Algeria | +213 | DZ | DZA | 00 | 2 |
| American Samoa | +1 | AS | ASM | 011 | 1 |
| Andorra | +376 | AD | AND | 00 | 3 |
| Angola | +244 | AO | AGO | 00 | 2 |
| Anguilla | +1 | AI | AIA | 011 | 1 |
| Antarctica | +672 | AQ | ATA | 00 | 6 |
| Antigua and Barbuda | +1 | AG | ATG | 011 | 1 |
| Argentina | +54 | AR | ARG | 00 | 5 |
| Armenia | +374 | AM | ARM | 00 | 3 |
| Aruba | +297 | AW | ABW | 00 | 2 |
| Australia | +61 | AU | AUS | 0011 | 6 |
| Austria | +43 | AT | AUT | 00 | 4 |
| Azerbaijan | +994 | AZ | AZE | 00 | 9 |
| Bahamas | +1 | BS | BHS | 011 | 1 |
| Bahrain | +973 | BH | BHR | 00 | 9 |
| Bangladesh | +880 | BD | BGD | 00 | 8 |
| Barbados | +1 | BB | BRB | 011 | 1 |
| Belarus | +375 | BY | BLR | 810 | 3 |
+1 670 123 4567.1 670 123 4567. On any mobile you can also dial +1 670 123 4567.010 1 670 123 4567. Japan is a major source of CNMI tourism, making this a busy route. From a mobile, use +1 670 123 4567.001 1 670 123 4567. Korea is a leading CNMI tourism market. From a mobile, simply use +1 670 123 4567.+1 670 [7-digit local]. Example: +1 670 123 4567. There is no leading 0 + no per-city code — the area code 670 is the single nationwide overlay covering Saipan, Tinian + Rota.+1 670 123 4567.One tap to install. One more to call. It really is that simple.