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- Area codes 617 and 857
- List of Massachusetts area codes
- List of dialling codes in Germany
- Area codes 781 and 339
- Boston
- List of North American Numbering Plan area codes
- Area codes 978 and 351
- Area codes 541 and 458
- Area codes 905, 289, 365, and 742
- Area codes 508 and 774
- Area codes 617 and 857 - Wikipedia
- 617 Area Code - Map, Phone Lookup, Time Zone - Wirefly
- 617 Area Code - Location, Time, Map, Cities and Census Data - ZIP-Codes.com
- List of Massachusetts area codes - Wikipedia
- 617 Area Code - National Phone Number Registry
- 857 Area Code - National Phone Number Registry
- Why is Boston’s area code 617? - NCESC - Employment Security …
- 617 Area Code, Massachusetts - USPhoneLookup
- What Is 617 Area Code? Local Calling Guide - Web Monitor
- Area Code 617 - Map, time zone, and phone lookup - CallerCenter
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Area codes 617 and 857 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts, serving the city of Boston and several surrounding communities such as Brookline, Cambridge, Newton and Quincy. Area code 617 is one of the original North American area codes created in October 1947, when it served the eastern two-thirds of Massachusetts, from roughly the western end of Worcester County to Cape Cod and the South Coast.
History
Massachusetts was the only New England state divided into multiple numbering plan areas (NPAs) when the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan in 1947. Area code 617 was assigned to the more populous eastern portion, stretching from roughly the western end of Worcester County to Cape Cod and the South Coast. The rest of the state, roughly everything from Hardwick westward, was served by area code 413.
In July 1988, most of the western, northern, and southern portions of the old 617 territory, including Worcester County, the Merrimack Valley, 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 the new 617 split off as 781, which almost completely surrounds 617. This made 617 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 telephone 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.
Area code 508 was split from 617 on July 16, 1988. Area code 978 subsequently split from 508 on September 1, 1997.
Area code 781 was split from 617 on September 1, 1997.
As of 2018, the 617/857 NPA is projected to be exhausted by 2041.
Service area
The numbering plan area 617/857 includes portions of the following counties:
This includes the following communities:
Central office codes by location
The NPA includes central offices with the following prefix format 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
The NPA includes central offices with the following prefix format 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
2-1-1: United Way Worldwide (UWW) and the Alliance for Information and Referral Systems (AIRS)
3-1-1: Used in Newton, Boston, and elsewhere for 3-1-1 services.
4-1-1: directory assistance
5-1-1: traffic information or police non-emergency services
6-1-1: unused (on landlines)
7-1-1: TDD relay (MassRelay) for the deaf
8-1-1: underground public utility location (Dig Safe),
9-1-1: emergency services
See also
List of Massachusetts area codes
List of North American Numbering Plan area codes
References
External links
"Area Code Maps". NANPA.
Massachusetts Area Code Map, Mass. Department of Telecommunications and Cable
NANP Administrator (July 2, 1987). "Split of the 617 Numbering Plan Area (NPA)" (PDF). www.nationalnanpa.com. IL-87/07-003. NANP Administrator. Retrieved January 11, 2023. Provides notification of date for the split of the 617 NPA and introduction of the new 508 NPA in Massachusetts.{{cite web}}: CS1 maint: date and year (link)
Staff writer (2023) [2005]. "Area Code 617 map and data profile". Area-Codes.com. Retrieved January 12, 2023. Area Code 617 Demographic Information
"Local Calling Guide". localcallingguide.com. 2023. Retrieved January 12, 2023.
Staff writer (2023). "Area Code, Exchange, Telco, Switch info in 617". telcodata.us. Retrieved January 12, 2023.
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Area codes 617 and 857 - Wikiwand
Area codes 617 and 857 - Wikipedia
Area codes 617 and 857 - Wikipedia
Area codes 617 and 857 | Wiki | Everipedia
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617 and 857 Area code: Boston Local Phone Numbers | JustCall Blog
857 area code — information, time zone, map
area codes 617 and 857
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Area codes 617 and 857 - Wikipedia
Area codes 617 and 857 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts, serving the city of Boston and several surrounding communities such as Brookline, Cambridge, Newton and Quincy.
617 Area Code - Map, Phone Lookup, Time Zone - Wirefly
Area code 617 serves the state of Massachusetts. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 617 is a General Purpose Code. 617 service area does overlap with 857 area codes. Dialing pattern for local calls within the same NPA (area code) is …
617 Area Code - Location, Time, Map, Cities and Census Data - ZIP-Codes.com
Feb 1, 2025 · 617 Area Code located in Massachusetts, including 53 cities, 5 counties, 1 time zone, map, Census demographics, and 755 active prefixes.
List of Massachusetts area codes - Wikipedia
Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [7] organized as four overlay complexes and a single-area code NPA. Eastern Massachusetts has area codes 339, 351, 508, 617, 774, 781, 857, and 978. [8] Western Massachusetts has area code 413 ...
617 Area Code - National Phone Number Registry
3 days ago · Area code 617 is located in Massachusetts. Get area code location and dialing plans for all phone prefixes in area code 617.
857 Area Code - National Phone Number Registry
5 days ago · Massachusetts - Area code 857 is currently assigned for use in Massachusetts since May 02, 2001. This area code originated from the 617 area code previously by means of area code split or overlay. View all phone prefixes used in …
Why is Boston’s area code 617? - NCESC - Employment Security …
Jun 20, 2024 · Boston phone numbers typically start with the area code 617 or 857. Both area codes serve the city of Boston and its surrounding areas, including Brookline, Newton, Quincy, and more. What is the oldest phone number still in use?
617 Area Code, Massachusetts - USPhoneLookup
In 2017, the Massachusetts Public Utilities Commission approved a plan to split the 617 area code into two separate area codes, 617 and 857. The new 857 area code will primarily serve the western suburbs of Boston, while the 617 area code will continue to serve the eastern suburbs.
What Is 617 Area Code? Local Calling Guide - Web Monitor
Jan 30, 2025 · For local calls within the 617 area code, a 10-digit dialing system is used, which means that callers must dial the area code (617) followed by the seven-digit local phone number. This applies to both landline and mobile phone calls. It’s worth noting that the 617 area code is an overlay area code, meaning that it shares the same geographic ...
Area Code 617 - Map, time zone, and phone lookup - CallerCenter
- 2001: Area code 617 was overlaid with area code 857. About area code 617: location, common spam callers, related area codes, and more. Includes 617 reverse phone lookup to identify spam callers.