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Area codes 617 and 857

From Wikipedia, the free encyclopedia

Map showing the region covered by area codes 617 and 857
Map showing the region covered by area codes 617 and 857
Map of current Massachusetts area codes (since May 2001)
Map of current Massachusetts area codes (since May 2001)
Massachusetts area codes from October 1947 until July 1988
Massachusetts area codes from October 1947 until July 1988

Area codes 617 and 857 are the North American area codes serving Boston and several surrounding communities in Massachusetts—such as Brookline, Cambridge, Newton and Quincy (LATA code 128).

The main area code, 617, was one of the original area codes from October 1947, and originally covered the eastern two-thirds of Massachusetts, from roughly the western end of Worcester County to Cape Cod and the South Coast. The rest of the state was served by area code 413; Massachusetts was the only New England state split between multiple area codes at the outset.

In July 1988, most of the western and southern portions of the old 617 territory, including Worcester, the South Coast and the Cape and Islands were split off as area code 508. Permissive dialing of 617 continued across eastern Massachusetts until January 1, 1989.

In 1997, the northern, western and southern portions of 617 split off as 781, which almost completely surrounds 617. This reduced 617 to Boston itself and its closer-in suburbs—an area largely coextensive with the inner ring of Greater Boston.

This was intended as a long-term solution, but within three years 617 was close to exhaustion once again due to the demand for more phone lines for auxiliary devices (mobile phones, fax machines, pagers, and BBS lines). On May 2, 2001, 857 was overlaid onto 617. Since then, 10-digit local dialing has been mandatory.

Some mobile phone numbers from the 1990s assigned to communities in the area surrounding 617 (which is now the 781 area code) kept the 617 area code after the split.

Splits from area code 617

  • 508: Split on July 16, 1988, and completed on January 1, 1989; 978 subsequently split from 508 on September 1, 1997
  • 781: Split on September 1, 1997, and completed on February 1, 1998

Future

As of 2018, the 617/857 NPA is projected to be exhausted by 2041.[1]

Communities

Counties

Portions of the following counties are covered:

Central office codes by location

(617)-NXX

  • Belmont: 209, 404, 484, 486, 489, 672, 826, 855, 883, 932, 977, 993
  • Boston Central: 204, 205, 210, 212, 217, 222, 223, 224, 226, 227, 228, 235, 236, 239, 246, 247, 248, 255, 259, 261, 262, 263, 266, 267, 275, 279, 283, 289, 292, 293, 295, 303, 304, 305, 306, 309, 310, 312, 314, 316, 320, 330, 331, 338, 341, 342, 343, 345, 346, 348, 350, 351, 352, 353, 356, 357, 358, 366, 367, 368, 369, 371, 372, 373, 375, 377, 378, 385, 391, 392, 399, 406, 407, 412, 413, 414, 416, 421, 422, 423, 424, 425, 426, 428, 429, 434, 437, 438, 439, 443, 447, 448, 449, 450, 451, 456, 457, 459, 470, 476, 478, 480, 482, 488, 490, 502, 504, 507, 510, 512, 513, 515, 517, 519, 521, 523, 526, 530, 531, 532, 534, 535, 536, 542, 543, 549, 556, 557, 563, 565, 570, 571, 572, 573, 574, 578, 579, 585, 587, 589, 590, 592, 593, 594, 595, 598, 603, 619, 620, 624, 626, 635, 636, 637, 638, 643, 645, 646, 648, 650, 654, 662, 664, 670, 671, 672, 680, 683, 686, 692, 694, 695, 697, 699, 717, 719, 720, 721, 722, 723, 724, 725, 726, 727, 728, 733, 737, 742, 743, 747, 748, 753, 755, 756, 757, 760, 763, 772, 777, 778, 780, 784, 785, 788, 790, 794, 799, 816, 818, 820, 823, 824, 828, 830, 832, 834, 835, 838, 839, 840, 848, 849, 850, 851, 854, 856, 859, 861, 865, 867, 869, 872, 875, 877, 878, 880, 888, 892, 894, 896, 897, 901, 904, 908, 912, 918, 919, 921, 927, 931, 933, 936, 937, 938, 939, 943, 946, 947, 948, 951, 954, 956, 959, 960, 961, 963, 973, 986, 988, 989, 994
  • Brighton: 202, 206, 208, 254, 300, 319, 403, 415, 560, 562, 586, 746, 779, 782, 783, 787, 789, 817, 870, 891, 903, 925, 987
  • Brookline: 232, 264, 274, 277, 278, 355, 383, 396, 432, 487, 505, 525, 566, 582, 608, 632, 651, 667, 677, 713, 730, 731, 732, 734, 735, 738, 739, 751, 754, 860, 879, 906, 935, 953, 975, 991, 992
  • Cambridge: 201, 216, 218, 225, 229, 230, 233, 234, 245, 250, 251, 252, 253, 256, 258, 280, 290, 299, 301, 308, 324, 335, 339, 349, 354, 359, 374, 384, 386, 388, 395, 397, 401, 417, 430, 441, 444, 452, 453, 460, 465, 468, 475, 491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 503, 520, 528, 540, 547, 550, 551, 575, 576, 577, 583, 588, 599, 613, 621, 642, 647, 649, 661, 665, 674, 679, 682, 685, 693, 703, 710, 714, 715, 758, 761, 768, 798, 800, 802, 803, 806, 812, 821, 836, 844, 852, 858, 864, 866, 868, 871, 873, 876, 899, 902, 909, 914, 940, 945, 949, 955, 976, 995, 998, 999
  • Charlestown: 241, 242, 286, 337, 380, 398, 580, 669, 681, 712, 886, 952, 982
  • Chelsea: 270, 336, 370, 409, 461, 466, 660, 819, 884, 887, 889, 958
  • Dorchester: 265, 282, 287, 288, 297, 326, 379, 436, 446, 474, 506, 514, 533, 704, 707, 740, 822, 825, 905, 929, 979
  • East Boston: 271, 418, 455, 561, 567, 568, 569, 634, 716, 874, 895, 913, 970, 981, 997
  • Everett: 203, 294, 381, 382, 387, 389, 394, 410, 420, 544, 545, 601, 843, 917, 944
  • Hyde Park (includes Readville and parts of Milton): 214, 272, 276, 333, 360, 361, 362, 364, 408, 604, 675, 705, 833, 910, 990
  • Jamaica Plain (includes Roslindale and West Roxbury): 323, 325, 327, 344, 363, 390, 435, 469, 477, 522, 524, 553, 676, 942, 971, 983
  • Melrose: 957
  • Milton (includes Mattapan; see also Hyde Park): 273, 291, 296, 298, 313, 322, 433, 615, 690, 696, 698, 898, 907, 915, 922, 980
  • Newton: 213, 215, 219, 243, 244, 332, 340, 431, 454, 467, 473, 485, 527, 546, 552, 558, 559, 564, 581, 584, 597, 609, 610, 614, 618, 630, 631, 641, 644, 655, 656, 658, 659, 663, 678, 762, 775, 795, 796, 831, 853, 862, 881, 882, 885, 893, 916, 928, 964, 965, 969
  • Quincy: 221, 237, 249, 302, 317, 328, 347, 376, 405, 471, 472, 479, 481, 483, 509, 537, 639, 653, 657, 687, 689, 691, 706, 729, 745, 750, 769, 770, 773, 774, 786, 793, 801, 804, 829, 837, 842, 845, 847, 890, 934, 984, 985
  • Roxbury: 238, 318, 400, 427, 442, 445, 516, 541, 602, 606, 652, 708, 749, 792, 989
  • Saugus: 285
  • Somerville: 284, 440, 501, 591, 616, 623, 625, 627, 628, 629, 666, 684, 702, 718, 741, 764, 767, 776, 863, 941, 996
  • South Boston: 268, 269, 307, 315, 334, 463, 464, 596, 622, 701, 752, 765, 766
  • Watertown: 231, 321, 393, 402, 458, 600, 607, 612, 668, 673, 744, 923, 924, 926, 972
  • Winthrop: 207, 329, 539, 841, 846

(857)-NXX

  • Belmont: 373, 626
  • Boston Central: 201, 204, 205, 207, 221, 222, 238, 241, 254, 257, 272, 277, 284, 288, 294, 319, 334, 350, 355, 362, 366, 383, 413, 445, 449, 453, 472, 488, 654, 753, 869, 891, 931, 991, 996
  • Brighton: 498, 540, 559, 919
  • Brookline: 218, 225, 234, 245, 307, 364, 576
  • Cambridge: 209, 253, 550, 600, 756, 829, 928, 940, 976, 998
  • Charlestown: 389, 452, 588
  • Chelsea: 776
  • Dorchester: 212, 217, 220
  • East Boston: 574
  • Everett: 363, 888
  • Hyde Park: 342, 345
  • Jamaica Plain: 203, 547, 719, 728
  • Milton: 598
  • Newton: 226, 229, 231, 232, 255, 404, 636
  • Quincy: 252, 403, 499, 526, 939
  • Roxbury: 399, 492, 544
  • Somerville: 227, 523, 995, 997
  • South Boston: 401, 496, 524
  • Watertown: 228
  • Winthrop: 201, 816

N11 codes

See also

References

External links

Massachusetts area codes: 339/781, 351/978, 413, 508/774, 617/857
North: 339/781
West: 339/781 Area codes 617/857 East: Atlantic Ocean
South: 339/781
This page was last edited on 10 October 2021, at 16:56
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