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Explore community-reported phone numbers with area code 406. Each listing includes spam scores, search activity, and structured caller tags for the United States.
Showing 25–44 of 44 indexable numbers — sorted by search activity.
Area code 406 is assigned to phone numbers in the United States. Local numbers help scammers appear trustworthy — always verify unknown 406 callers on CheckThatCall before calling back.
Search any full 10-digit US number on CheckThatCall or browse reported listings on the area code 406 hub. We show community spam scores and structured caller tags when available.
In our current sample of 20 active 406 listings, about 100% show community spam scores of 60 or higher, with an average of 100/100. That suggests elevated reporting activity in this area code — but scores are user-estimated, not verified. Always look up the specific number that called you.
This directory currently lists 44 numbers with area code 406 that meet our indexing standards (community reports or repeated searches). The sample shown includes 20 combined community reports.
Reported 406 numbers on CheckThatCall are tagged with structured categories such as robocalls, telemarketing, and scam types. Browse the hub listings to see individual spam scores — we do not assign a single label to an entire area code.