🇺🇸 United States · Montana

Area code 406

Area code 406 is a telephone area code in Montana, United States, covering Billings, Missoula, Helena, Kalispell, Great Falls, Bozeman and more. Local time is UTC−7 (UTC−6 in summer). Numbers look like (406) 234-5678, or +1 406 234 5678 from abroad.

State: Montana
Time zone: Denver UTC−7 (UTC−6 in summer)
Local time now: –
Dial from abroad: +1 406

Places in area code 406

Cities and towns with telephone exchanges in the 406 area code, most exchanges first.

Billings
Missoula
Helena
Kalispell
Great Falls
Bozeman
Miles City
Butte
Conrad
Manhattan
Eureka
Hamilton
Glendive
Sidney
Lewistown
Whitefish
Livingston
Boulder
East Helena
Glasgow
Havre
Townsend
Three Forks
Whitehall

How to dial area code 406

Calling from	You dial
Inside the 406 area	406 234 5678 (10 digits)
Elsewhere in the US & Canada	1 406 234 5678
Any mobile phone, anywhere	+1 406 234 5678
UK, Europe, India and most countries	00 1 406 234 5678
Australia	0011 1 406 234 5678

Area code 406: FAQ

Where is area code 406?

Area code 406 is in Montana, United States and serves Billings, Missoula, Helena, Kalispell, Great Falls, Bozeman. and other places

What time zone is area code 406 in?

Area code 406 is in the America/Denver time zone (UTC−7 (UTC−6 in summer)).

How do I call a 406 number from outside the US and Canada?

Dial your exit code (00 in most countries, or + on a mobile), then 1, then 406 and the seven-digit number. Example: +1 406 234 5678.

Is a call from area code 406 a scam?

Area code 406 is a regular North American area code, but caller ID can be spoofed: scammers often show local-looking numbers. Do not call back unknown numbers that ask for money or personal data, and check the number with the phone number validator to see whether it is valid and whether it is a mobile, landline or VoIP number.

Phone number API

Check 406 numbers in your app

numlookupapi checks any phone number worldwide in one request and returns validity, line type, carrier, location and every standard format as JSON.

Read the documentation

100 free requests every month. No credit card required.

GET https://api.numlookupapi.com/v1/validate/+14062345678

{
  "valid": true,
  "number": "12069220880",
  "local_format": "2069220880",
  "international_format": "+12069220880",
  "country_prefix": "+1",
  "country_code": "US",
  "country_name": "United States of America",
  "location": "Seattle",
  "line_type": "landline",
  "e164_format": "+12069220880",
  "national_format": "(206) 922-0880"
}