Where Is 670 Area Code? United States Map & Time Zone

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📞 670 Area Code — Quick Reference
📍 LocationSaipan, Northern Mariana Islands
🕐 Time ZoneChamorro (UTC+10)
🗓️ StatusActive — Geographic

The 670 area code covers Saipan, Northern Mariana Islands. Whether you received an unexpected call from this number or you’re trying to figure out where a 670 number is based, this guide covers the exact location, time zone, spam reputation, blocking instructions, and which cities fall under this code.

📍 Where Is the 670 Area Code Located?

The 670 area code is located in Northern Mariana Islands, primarily serving Saipan and the surrounding region. It’s a standard geographic area code under the North American Numbering Plan (NANP). Keep in mind that mobile number portability means someone could carry a 670 number with them after moving — so the code tells you where the number was issued, not necessarily where the person is right now.

670 Area Code — Location Details
State/ProvinceNorthern Mariana Islands (MP)
Major CitySaipan
CountryUnited States (+1)
Time ZoneChamorro (UTC+10)
TypeGeographic — Standard
NANPA StatusActive

🕐 670 Area Code Time Zone

The 670 area code operates in the Chamorro Time Zone (UTC+10). Here’s how it compares to other US time zones:

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 Business hours (good to call)     Early / late hours     Night — do not call
Official Resources: Report Fraud — FTC Do Not Call Registry NANPA Directory
Time ZoneDifference from 670
Eastern TimeSame time
Central Time-1 hour
Mountain Time-2 hours
Pacific Time-3 hours
💡 Calling Tip: Reach someone in the 670 area between 10 AM – 4 PM their local time for the best chance of an answer. Calls outside those hours are more likely to be screened or ignored.

🛡️ Is 670 Area Code Spam or Scam?

Like most US area codes, 670 is used by both legitimate callers and scammers. The code itself is perfectly real — millions of people and businesses in Saipan use it daily. But scammers frequently spoof 670 numbers because local-looking calls get answered more often than unfamiliar ones.

⚠️ Red Flag: If a 670 caller demands immediate payment via gift cards, wire transfer, or crypto — hang up. No legitimate organization uses these methods. Verify by calling the company’s official number directly.

How to verify: Don’t call back the number — look up the official number for whatever organization the caller claimed to represent and call that instead. Google the full 10-digit number in quotes to check if others have reported it as spam.

📵 How to Block 670 Spam Calls & Texts

Block on iPhone

  1. Open Phone → tap Recents
  2. Tap ⓘ next to the 670 spam number
  3. Scroll down → “Block this Caller”
  4. Silence all unknowns: Settings → Phone → Silence Unknown Callers → ON

Block on Android

  1. Open Phone → find the 670 number
  2. Tap ⋮ menu → “Block number”
  3. For broader blocking: Settings → Blocked numbers → Unknown toggle ON

Report Spam

  1. Forward spam texts to 7726 (SPAM)
  2. Report at reportfraud.ftc.gov
  3. Register at donotcall.gov or call 1-888-382-1222

🔍 Who Called from 670? Reverse Lookup

  1. Google the full 10-digit number in quotes — catches ~70% of unknown callers
  2. Check Whitepages.com or Truecaller.com
  3. Search 800notes.com for community reports
  4. No voicemail left? Almost certainly spam — legitimate callers leave messages
⚠️ One-Ring Scam: If a 670 number rings once and hangs up, do NOT call back. This scam connects you to a premium-rate line that charges your bill.

🔗 Nearby Area Codes

CodeLocationTime Zone

❓ 670 Area Code — FAQ

What state is 670 area code in?
The 670 area code is in Northern Mariana Islands, serving Saipan and surrounding areas.
What city does 670 cover?
670 primarily covers Saipan and nearby communities in Northern Mariana Islands.
Is 670 toll-free?
No. 670 is a geographic area code. Toll-free codes are 800, 833, 844, 855, 866, 877, 888.
What time zone is 670?
Chamorro (UTC+10).
Is 670 a scam?
670 is legitimate — it serves real people in Saipan. But scammers may spoof 670 numbers. Verify suspicious callers independently.
Why do I keep getting 670 calls?
Repeated 670 calls without a known contact are likely robocalls. Use your phone’s Silence Unknown Callers feature.
Can I get a 670 number remotely?
Yes — VoIP services like Google Voice offer 670 numbers regardless of where you live.
Is 670 cell or landline?
670 covers both. US area codes don’t distinguish between mobile and landline.
How do I block 670 calls?
iPhone: Settings → Phone → Silence Unknown Callers. Android: Phone → Settings → Blocked numbers. For area-code blocking, use Truecaller or RoboKiller.

🔗 Related Area Code Guides

    Updated April 2026 · Data from NANPA & FCC · areacodess.org/