Area Code 406

FTC complaints involving 406 numbers

Numbers shown with area code 406 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Other”, “Calls pretending to be government, businesses, or family and friends”, “Reducing your debt (credit cards, mortgage, student loans)”.

Most-complained 406 numbers:

• (406) 431-6997 — 15 complaints
• (406) 665-4304 — 10 complaints
• (406) 698-9561 — 7 complaints
• (406) 813-3108 — 7 complaints
• (406) 256-1840 — 6 complaints

These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam. See the most-reported area codes and the most-reported phone numbers nationwide.

Frequently asked questions

Where is area code 406?

Area code 406 covers Billings and nearby cities including Missoula, Great Falls, Bozeman in Montana, in the Mountain Time.

What cities use area code 406?

Area code 406 serves Billings, Missoula, Great Falls, Bozeman, Butte, and 1 other communities in Montana.

What time zone is area code 406 in?

Area code 406 is in the Mountain Time (America/Denver).

How do you dial a 406 number?

Dial all 10 digits: 406 followed by the 7-digit local number. From abroad, dial +1 406 and the local number.

Is a call from area code 406 a scam?

A 406 number is geographically tied to Montana, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Is 406 a country code?

No. 406 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 406 number written for international dialing looks like +1 406 followed by the 7-digit local number.