Area code 406
Area code 406 is the telephone
American Telephone and Telegraph Company created a nationwide telephone numbering plan
in 1947.
As of 2013, there were 1.7 million lines served by 47 carriers; all but two wireline providers support
number pooling has been implemented in response to increased demand and inefficient use of 406 numbering resources.[1][2]
Prior to October 2021, area code 406 had telephone numbers assigned for the
National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.[3]
Service area
The service area includes the following communities and their
central office codes
.
- Absarokee: 328, 985
- Alberton: 722
- Alta: 349
- Alzada: 828, 938
- Anaconda: 559, 560, 563, 691, 797
- Arlee: 726
- Ashland: 784, 983
- Augusta: 562
- Avon: 492
- Bainville: 769
- Baker: 778, 891, 956, 978
- Belfry: 664
- Belgrade: 388, 813, 924
- Belt: 277
- Bigfork: 420, 837
- Big Sandy: 378
- Big Sky: 993, 995, 999
- Big Timber: 930, 931, 932, 936
- Billings: 200, 206, 208, 237, 238, 245, 247, 248, 252, 254, 255, 256, 259, 272, 281, 294, 318, 325, 371, 373, 384, 435, 534, 545, 591, 598, 601, 606, 620, 647, 651, 652, 655, 656, 657, 661, 670, 671, 672, 690, 694, 696, 697, 698, 702, 794, 839, 850, 855, 860, 861, 867, 869, 876, 894, 896, 927, 969
- Birney: 984
- Bloomfield: 583
- Boulder: 225, 313
- Box Elder: 352
- Bozeman: 209, 219, 312, 404, 414, 451, 522, 539, 548, 551, 556, 570, 577, 579, 580, 581, 582, 585, 586, 587, 589, 595, 599, 600, 602, 624, 898, 916, 920, 922, 994
- Brady: 753
- Bridger: 662, 800
- Broadus: 436, 935
- Broadview: 667
- Brockton: 786
- Browning: 338, 573
- Busby: 592
- Butte: 221, 299, 310, 479, 490, 491, 494, 496, 497, 498, 533, 565, 593, 723, 782, 792
- Canyon Creek: 368
- Carlyle: 588
- Carter: 734
- Cascade: 468
- Charlo: 644
- Chester: 759
- Chinook: 357
- Choteau: 466
- Circle: 485, 974
- Clinton: 330, 825
- Clyde Park: 686
- Colstrip: 213, 720, 740, 748, 749
- Columbia Falls: 892, 897
- Columbus: 290, 298, 321, 322, 780
- Condon: 754
- Conrad: 271, 278, 289, 505, 576
- Cooke City: 838
- Crooked Creek: 484
- Culbertson: 514, 787, 790
- Custer: 856
- Cut Bank: 229, 391, 845, 873
- Dagmar: 483
- Darby: 821
- Decker: 757
- Deer Lodge: 415, 645, 846
- Denton: 567
- Devon: 432
- Dillon: 596, 660, 683, 865, 925, 960, 988
- Divide: 267, 553
- Dixon: 246
- Dodson: 383
- Drummond: 288
- Dupuyer: 472
- Dutton: 476
- East Conrad: 627
- East Glacier Park: 226
- Ekalaka: 775, 975
- Elmo: 631, 849
- Ennis: 682
- Ethridge: 339
- Eureka: 296
- Eureka rural: 297, 882, 889
- Fairfield: 467
- Fairview: 742, 747
- Fallon: 486
- Finley Point: 571, 887
- Flaxville: 474
- Flaxville rural: 779
- Forsyth: 201, 346, 351, 356, 729
- Fort Benton: 621, 622
- Fort Peck: 526
- Fort Shaw: 264
- Fort Smith: 666
- Frazer: 695
- Frenchtown: 508, 626
- Froid: 766
- Froid rural: 963
- Fromberg: 668
- Gallatin Gateway: 518, 763
- Gardiner: 848
- Geraldine: 737
- Geyser: 735
- Gildford: 376
- Glasgow: 228, 230, 263, 831, 942
- Glendive: 345, 359, 365, 377, 948, 987
- Glentana: 724
- Grant: 681
- Grass Range: 428, 928
- Great Falls: 205, 216, 217, 231, 268, 315, 403, 452, 453, 454, 455, 564, 590, 604, 727, 731, 750, 760, 761, 770, 771, 781, 788, 791, 799, 836, 866, 868, 870, 878, 899, 923, 952, 964, 965
- Hamilton: 360, 361, 363, 369, 375, 381, 802, 961
- Hardin: 623, 629, 638, 665, 679, 699, 953
- Harlem: 353
- Harlowton: 632
- Harrison: 685
- Haugan: 678
- Havre: 262, 265, 808, 879, 945
- Hays: 673
- Helena: 202, 204, 227, 324, 389, 410, 417, 422, 430, 431, 437, 438, 439, 440, 441, 442, 443, 444, 447, 449, 457, 458, 459, 461, 465, 475, 495, 502, 513, 555, 558, 594, 603, 634, 841, 933, 992, 996
- Highwood: 733
- Hingham: 397
- Hinsdale: 364
- Hobson: 423
- Hopp Illiad: 386
- Hot Springs: 741
- Hungry Horse: 387, 929
- Huntley: 348
- Hysham: 342
- Jackson: 834
- Joliet: 905, 962
- Joplin: 292
- Jordan: 557, 977
- Judith Gap: 473
- Kalispell: 212, 249, 250, 253, 257, 260, 261, 270, 300, 309, 314, 407, 471, 607, 751, 752, 755, 756, 758, 858, 871, 885, 890
- Kevin-Oilmont: 337
- Kremlin: 372
- Lakeside: 709, 844
- Lambert: 774, 914
- Lame Deer: 477
- Larslan: 725
- Laurel: 530, 628, 633, 743, 812
- Lavina: 636
- Lewistown: 350, 366, 380, 535, 538, 707, 708, 968
- Libby: 283, 291, 293, 334, 400
- Lima: 276, 340
- Lincoln: 362
- Lindsay: 584
- Livingston: 220, 222, 223, 224, 333, 823, 946
- Lodge Grass: 639
- Loma: 739
- Malta: 301, 654, 680
- Manhattan: 282, 284
- Marion: 854, 991
- Martinsdale: 572
- Medicine Lake: 789
- Melrose: 835
- Melstone: 358
- Melville: 537
- Miles City: 232, 233, 234, 851, 852, 853, 874, 934, 944, 951
- Missoula: 203, 207, 214, 215, 218, 239, 240, 241, 243, 251, 258, 273, 274, 303, 317, 327, 329, 370, 396, 493, 523, 529, 531, 532, 540, 541, 542, 543, 544, 546, 549, 550, 552, 721, 728, 829, 830, 880, 926
- Molt: 669
- Moore: 374
- Musselshell: 947
- Nashua: 746
- Neihart: 236
- North Broadus: 554
- North Cut Bank: 336
- North Frannie: 764
- North Glasgow: 367
- North Hinsdale: 648
- North Nashua: 785
- North Parkman: 643, 659[4]
- North Poplar: 448
- North Havre: 394, 398
- North Ryegate: 575
- North Wolf Point: 392
- Noxon: 847
- Olney: 820, 881
- Opheim: 762
- Outlook: 895
- Ovando: 793
- Pablo: 275, 332, 675
- Peerless: 893
- Pendroy: 469
- Philipsburg: 859
- Plains: 826
- Plentywood: 765
- Plevna: 772, 971
- Polson: 319, 872, 883, 884
- Pompey's Pillar: 875
- Poplar: 768
- Potomac: 244
- Power: 463
- Rapelje: 663
- Raynesford: 738
- Red Lodge: 425, 426, 445, 446, 818
- Reed Point: 326
- Reserve: 286
- Richey: 773, 979
- Ridge: 767[5]
- Rock Springs: 354
- Ronan: 528, 676, 833
- Rosebud: 347
- Roundup: 320, 323, 331, 913
- Roy: 464, 954
- Rudyard: 355
- Ryegate: 568
- Saco: 527
- Saint Ignatius: 744, 745, 824
- Saint Mary: 732
- Savage: 776
- Scobey: 487, 688
- Scobey rural: 783
- Seeley Lake: 210, 499, 677
- Shelby: 424, 434, 450, 460, 470, 597, 966
- Sheridan: 842
- Sidney: 433, 478, 480, 482, 488, 489, 630, 943, 973
- Silvertip: 574, 840[6]
- Somers: 393, 857
- South Alberton: 864
- South Broadus: 427
- South Chester: 456
- South Miles City: 421, 981
- South Havre: 390, 395, 399
- South Malta: 658
- South Wolf Point: 525, 915
- Stanford: 566
- Stevensville: 625, 777
- Stockett: 736
- Saint Regis: 269, 280, 649
- Sunburst: 561, 937
- Superior: 382, 515, 822
- Swan Lake: 612, 886
- Sweetgrass: 335
- Terry: 635, 637, 957
- Thompson Falls: 242, 615, 827
- Three Forks: 285, 616
- Townsend: 266, 521, 949, 980
- Troy: 295
- Turner: 379
- Twin Bridges: 684
- Valier: 279
- Victor: 642
- Virginia City: 843
- Valley Industrial Park: 524
- Warm Springs: 693
- West Beach: 877[7]
- Westby: 385
- West Camp Crook: 972[8]
- West Glacier: 888
- West Glendive: 687, 939, 941, 989
- West Sidney: 798
- West Squaw Gap: 569[9]
- West Yellowstone: 640, 641, 646
- Whitefish: 730, 862, 863
- Whitehall: 287
- Whitewater: 674
- White Sulphur Springs: 305, 547
- Wibaux: 795, 796
- Wilsall: 578
- Winifred: 462
- Winnett: 429
- Wisdom: 689
- Wise River: 832
- Wolf Creek: 235, 302
- Wolf Point: 650, 653
- Worden: 967
- Wyola: 343
- Yellow Bay: 692, 982
- Premium numbers: (1-406) 976
See also
References
- ^ Inbody, Kristen (27 Nov 2017). "In Montana, it's 406 exclusively until 2031". Great Falls Tribune. www.greatfallstribune.com. Retrieved 13 June 2023.
- ^ "Montana PSC Granted Authority to Implement Mandatory Number Pooling". fcc.gov. 12 December 2015. Archived from the original on 10 December 2017. Retrieved 7 May 2018.
- ^ "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. January 8, 2021. Retrieved March 9, 2021.
- ^ North Parkman is served from wire centre DNRHWYMARS1 Archived 2014-10-19 at the Wayback Machine in Sheridan, WY
- ^ Ridge is served from HLTTWYXCRS1 Archived 2014-10-19 at the Wayback Machine Hulett, WY
- ^ Silvertip is served from POWLWYMARS1 Archived 2014-10-19 at the Wayback Machine Powell, WY
- ^ West Beach is served from BECHNDXADS1 Archived 2014-10-19 at the Wayback Machine in Beach, ND
- ^ West Camp Crook is served from CMCRSDXARL0 Archived 2014-10-19 at the Wayback Machine in Camp Crook, SD
- ^ West Squaw Gap is served from SQGPNDXARS5 Archived 2014-10-19 at the Wayback Machine Squaw Gap, ND
External links
North: 639
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West: 208/986 | 406 | East: 605, 701 |
South: 307 | ||
Alberta area codes: 403, 587/825/368, 780 | ||
British Columbia area codes: 236/672/778, 250, 604 | ||
639
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Idaho area codes: 208/986 | ||
North Dakota area codes: 701 | ||
South Dakota area codes: 605 | ||
Wyoming area codes: 307 |