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of 617, with a semicircle around Boston retaining 617 and the central offices in the northern, western, and southern parts of the area being reassigned to area code 508. Permissive dialing of 617 and 508 continued until
January 1, 1989.
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Some mobile telephone numbers assigned in the 1990s in communities in the former northern half of 508 (now the 978 area code) kept the area code after the split.
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Massachusetts was originally divided into two numbering plan areas, when AT&T published the configuration of the first nationwide
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The numbering plan area of area codes 508 and 774 includes the southern parts of the regions of
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81:. The numbering plan area comprises south-central and most of southeastern Massachusetts (
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Map of area code 508 from its inception in July 1988 until it was split in
September 1997
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was assigned to the eastern two-thirds of
Massachusetts from roughly the western end of
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Area code 774 was added to the 508 numbering plan area on May 2, 2001, forming an
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27:
Area codes for south-central and most of southeastern
Massachusetts
34:
Highlighted area of the numbering plan area overlay of 508 and 774
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On
September 1, 1997, numbering plan area 508 was split, whereby
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Area code 508 was activated for service on July 16, 1988, in an
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As of 2018, NPA 508/774 is projected to be exhausted by 2045.
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was assigned to the northern part of the service area.
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347:, Mass. Department of Telecommunications and Cable
42:Map of the Massachusetts area codes since May 2001
312:. Bell Communications Research, NANPA. 1987-07-02
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287:List of North American Numbering Plan area codes
307:"Split of the 617 Numbering Plan Area (NPA)"
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330:2018 October NANPA Exhaust Projections
353:NANPA area code map of Massachusetts
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282:List of area codes in Massachusetts
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153:, while the western part received
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486:Area codes in the United States
224:The major towns and cities are
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1:
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71:North American Numbering Plan
89:, Outer south and southwest
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491:Area codes in Massachusetts
345:Massachusetts Area Code Map
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10:
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183:mandatory for all calls.
127:telephone numbering plan
63:Area codes 508 and 774
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131:Operator Toll Dialing
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147:The Cape and Islands
97:region), as well as
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85:128). It includes
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211:Martha's Vineyard
181:ten-digit dialing
111:Martha's Vineyard
16:(Redirected from
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199:Worcester County
139:Worcester County
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177:overlay complex
162:area code split
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73:(NANP) for the
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424:Atlantic Ocean
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339:External links
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91:Greater Boston
65:are telephone
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360:Massachusetts
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205:, as well as
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170:area code 978
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155:area code 413
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135:Area code 617
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93:(such as the
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79:Massachusetts
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18:Area code 774
467:area codes:
465:Rhode Island
452:area codes:
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362:area codes:
325:
314:. Retrieved
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193:Service area
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450:Connecticut
258:New Bedford
234:Bridgewater
219:South Coast
179:and making
151:South Coast
103:New Bedford
480:Categories
316:2023-05-26
293:References
250:Framingham
246:Fall River
230:Barnstable
217:, and the
149:, and the
99:Fall River
75:U.S. state
67:area codes
270:Worcester
242:Dartmouth
226:Attleboro
215:Nantucket
203:MetroWest
133:in 1947.
115:Nantucket
95:MetroWest
87:Worcester
276:See also
262:Plymouth
254:Franklin
238:Brockton
207:Cape Cod
107:Cape Cod
458:860/959
454:203/475
420:781/339
411:508/774
393:978/351
380:978/351
376:781/339
372:617/857
368:508/774
266:Taunton
121:History
69:in the
268:, and
143:Boston
113:, and
433:South
389:North
310:(PDF)
416:East
402:West
201:and
129:for
83:LATA
469:401
441:401
437:860
406:413
364:413
141:to
77:of
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439:,
435::
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319:.
20:)
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