Area codes › MP › 670

USA Area code 670 - All of Northern Mariana Islands

Area code 670 is a statewide North American Numbering Plan code serving all of Northern Mariana Islands; its largest city is MP. It was activated in 1997 .

Sources: FCC OpenData, Wikipedia, and community-submitted reports · Updated
Reverse phone lookup

Who’s Texting & Calling? Enter a Number

See the owner’s name, carrier, location, and any scam reports in seconds. (May reveal social media profiles, online footprints, pics and more.)

+1

100% confidential lookup - the person you search will not know.

Local time in 670 ?
-
Time zone ?
Eastern (ET)
Activated ?
1997

Who called me from area code 670?

A call from area code 670 can come from anywhere in Northern Mariana Islands - it is a statewide code, with MP its largest city - but caller ID spoofing means the area code alone cannot confirm who called. The only reliable way to identify the caller is to check the full 10-digit number:

  1. Run the number through the reverse phone lookup at the top of this page to see the owner's name, carrier, and location.
  2. Compare it against the recently reported scam numbers in 670 below.
  3. If the call was unwanted, report it to the FTC and use the report form on this page so other 670 residents see it.
Report a scam call from 670 Help other 670-area residents - takes 20 seconds, no signup

Reports are reviewed by our team before appearing on the page. The highest-reported numbers get added to the “Recently reported scam numbers” list above with a “community” badge.

Only the number, category, and description are stored. IP addresses are one-way hashed for rate-limiting and never stored raw. Reports are moderated before publication. Links are not allowed in descriptions.

Should I answer a call from a 670 number? Take the 30-second quiz - 5 questions, verdict + advice

Runs entirely in your browser - nothing is sent or stored.

1. Were you expecting a call today?
2. Do you recognise the specific number (not just the area code)?
3. Have you searched the number online yet?
4. Is it during normal business hours in 670?
5. Are you actively waiting on a business decision (delivery, loan, job, etc.)?

Area codes near 670 (overlay + neighboring)

If a caller ID shows one of these codes, the call is probably still from the MP area or a nearby region. Click any code to see its own page.

Neighboring regions (codes next door)

These codes cover regions adjacent to 670. Common for calls from nearby cities and across county lines.

Robocall complaints in area code 670

Live FCC data coming soon. Our automated scraper for FCC consumer-complaint statistics is in build. Once live, this section will show a real monthly trend chart of robocall complaints tied to 670 numbers, refreshed on the FCC's monthly release cadence.

Source will be FCC Consumer Complaint Data.

Recently reported scam numbers in 670

No reports for 670 yet. Be the first - use the “Report a scam call” form below to flag a number you've received. Approved reports appear here alongside FCC-recorded complaints.

How to block 670 spam calls (by carrier)

Getting repeated spam calls from 670 numbers around MP, MP? You can't legitimately block every 670 call without also missing legitimate ones from MP, MP - so the practical fix is to turn on your carrier's free spam filter and register on the national do-not-call list. Step-by-step for each major US carrier below.

AT&T

  1. Download the free AT&T ActiveArmor app (iOS + Android).
  2. Sign in with your wireless number.
  3. Enable Fraud Blocking and Suspected Spam Warning.
  4. To block a specific number, tap the call in your history → Block.

Verizon

  1. Download the free Verizon Call Filter app (iOS + Android).
  2. Sign in with your Verizon account.
  3. Turn on Spam Filter.
  4. To block a specific number: My Verizon → Blocks → Add Number.

T-Mobile

  1. Download the free Scam Shield app (iOS + Android).
  2. Enable Scam Block (blocks known scam calls silently).
  3. Use Scam ID to see “Scam Likely” caller ID on suspicious numbers.
  4. To block a specific number, dial #662# from your device.

All carriers

  1. Register on the FTC's National Do-Not-Call list.
  2. Report unwanted calls to the FCC at fcc.gov/complaints.
  3. On iPhone: Settings → Phone → Silence Unknown Callers.
  4. On Android: Phone app → ⋮ → Settings → Caller ID & spam.

Sources: carrier support pages (AT&T, Verizon, T-Mobile), FCC consumer guides. Free features as of 2026. Every one of these steps costs nothing.

History of the 670 area code

Commonwealth of the Northern Mariana Islands (CNMI). It was created in 1997, when the administration joined the NANP and it replaced access via the International Telecommunication Union (ITU) country code 670.

670 area code FAQ: common questions

What area code is 670?

Area code 670 is a North American Numbering Plan area code that serves Telephone area code for the Northern Mariana Islands in MP, primarily including MP and surrounding communities. It was activated in 1997.

Where does area code 670 cover?

Area code 670 covers the MP, MP area.

Is 670 a real area code or a scam?

670 is a real, actively-assigned US area code - not itself a scam. However, spammers do use 670 numbers because the code is well-known and appears local to millions of residents. Always verify the specific number, not the area code.

How do I block 670 spam calls?

You cannot legitimately block an entire area code without also blocking legitimate calls from MP. Better options: register on the National Do-Not-Call list, enable your carrier's spam-filter (all major US carriers now offer this free), and report unwanted calls to the FCC at fcc.gov/complaints so they show up in the trend data on this page.

What's the overlay area code for 670?

670 does not currently have an overlay area code assigned. New numbers in the region are still issued with the 670 prefix.

Sources

Look up a 670 number now

Or explore reverse-phone lookup for any US number.