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406-566

You are reviewing the Area Code (NPA/NXX) report for 406-566. Did you mean to search the SMS short code 406566?

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Raw Number406566
Basic Format406-566
NPA (Area Code)406
NXX566

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective DateBlock Available Date
406-566-0XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDAFSTANFORDMTWE06/09/2026
406-566-1XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDRTSTANFORDMTWE
406-566-2XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDRTSTANFORDMTWE
406-566-3XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDRTSTANFORDMTWE
406-566-4XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDRTSTANFORDMTWE
406-566-5XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDRTSTANFORDMTWE
406-566-6XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDAFSTANFORDMTWE06/09/2026
406-566-7XXX9415LEVEL 3 COMMUNICATIONS, LLC - MTSTANFORDAS04/20/2026STANFORDMTWE06/09/2026
406-566-8XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDRTSTANFORDMTWE
406-566-9XXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDRTSTANFORDMTWE
406-566-XXXX3310TRIANGLE TEL. COOP. ASSN., INC.STANFORDASSTANFORDMT

Business/Government Phones on the 406-566 Prefix

PhoneNameAddress
406-566-2351D's Supermarket82 Central Avenue 59479 US
406-566-2531Saint Rose of Lima Catholic Church101 4th Street South Stanford 59479 US
406-566-2531Saint Anthony Catholic Church1100 Main Street Denton 59430 US
406-566-2531Sacred Heart Catholic Church210 2nd Avenue East Hobson 59452 US
406-566-2531Saint Mathias Catholic Church310 2nd Street East Moore 59464 US
406-566-2531Saint Cyril Catholic Church100 Hill Avenue Geyser 59447 US

Reports

Anonymous User from Great Falls, Montana

November 30, 2025 at 1:56 PM

406-566-5714 reported as a Live Voice or Other. Received on November 28, 2025 at 5:16 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , MT

November 29, 2025 at 12:07 PM

406-566-9752 reported as a Robocall. Received on November 29, 2025 at 9:09 AM.

Most 'popular' numbers on this prefix:

406-566-2XXX: 406-566-2200 | 406-566-2220 | 406-566-2233 | 406-566-2236 | 406-566-2237 | 406-566-2300 | 406-566-2345 | 406-566-2352 | 406-566-2353 | 406-566-2354 | 406-566-2362 | 406-566-2500 | 406-566-2501 | 406-566-2507 | 406-566-2530 | 406-566-2533 | 406-566-2535 | 406-566-2600 | 406-566-2650 | 406-566-2660 | 406-566-2661 | 406-566-2666 | 406-566-2700 | 406-566-2720 | 406-566-2730 | 406-566-2733 | 406-566-2737 | 406-566-2777 |