406 Area Code Location – Cities, Zip Codes & Map

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📞 406 Area Code — Quick Reference
📍 LocationBillings, Montana
🕐 Time ZoneMountain (UTC-7/UTC-6)
🗓️ StatusActive — Geographic

Area code 406 is assigned to Billings, Montana. Whether you received an unexpected call from this number or you’re trying to figure out where a 406 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 406 Area Code Located?

The 406 area code is located in Montana, primarily serving Billings 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 406 number with them after moving — so the code tells you where the number was issued, not necessarily where the person is right now.

406 Area Code — Location Details
State/ProvinceMontana (MT)
Major CityBillings
CountryUnited States (+1)
Time ZoneMountain (UTC-7/UTC-6)
TypeGeographic — Standard
NANPA StatusActive

🕐 406 Area Code Time Zone

The 406 area code operates in the Mountain Time Zone (UTC-7/UTC-6). 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 406
Eastern Time+2 hours
Central Time+1 hour
Mountain TimeSame time
Pacific Time-1 hour
💡 Calling Tip: Reach someone in the 406 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 406 Area Code Spam or Scam?

Is a 406 call spam? Not necessarily — 406 is a legitimate area code serving Billings and surrounding areas. That said, scammers routinely spoof 406 numbers to make their calls look local. The general rule: if you don’t recognize the number and they don’t leave a voicemail, it’s probably junk.

⚠️ Red Flag: If a 406 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 406 Spam Calls & Texts

Block on iPhone

  1. Open Phone → tap Recents
  2. Tap ⓘ next to the 406 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 406 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 406? 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 406 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

❓ 406 Area Code — FAQ

What state is 406 area code in?
The 406 area code is in Montana, serving Billings and surrounding areas.
What city does 406 cover?
406 primarily covers Billings and nearby communities in Montana.
Is 406 toll-free?
No. 406 is a geographic area code. Toll-free codes are 800, 833, 844, 855, 866, 877, 888.
What time zone is 406?
Mountain (UTC-7/UTC-6).
Is 406 a scam?
406 is legitimate — it serves real people in Billings. But scammers may spoof 406 numbers. Verify suspicious callers independently.
Why do I keep getting 406 calls?
Repeated 406 calls without a known contact are likely robocalls. Use your phone’s Silence Unknown Callers feature.
Can I get a 406 number remotely?
Yes — VoIP services like Google Voice offer 406 numbers regardless of where you live.
Is 406 cell or landline?
406 covers both. US area codes don’t distinguish between mobile and landline.
How do I block 406 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/