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Get a local business phone number in Dedham, MA

Dedham's area codes, prefixes and carriers from NANPA records, and how to put a Dedham number in front of your customers.

Area code
781 / 617 / 339
Exchanges
41NANPA-assigned
Carriers
12
Population
25,485Census 2024 est.

Area codes in Dedham

Dedham, in Norfolk County, Massachusetts, had a Census-estimated population of 25,485 in July 2024. NANPA lists 41 exchanges for its rate center across 3 area codes; 781 has the most (35, 85%). 781 is part of an overlay with 339, so a new local number in Dedham may carry any of those codes depending on which have numbers available. Dedham is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 781 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Dedham, MA
Area codeExchanges hereShareIn service sinceOverlay withTime zone
7813585%1997339Eastern
61749.8%1947857Eastern
33924.9%2001781Eastern

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Phone carriers in Dedham

12 carriers hold the 41 exchanges assigned to Dedham's rate center. Verizon New England INC. has the most, with 10. 32 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.

Carriers holding exchanges in Dedham, MA
Carrier (NANPA operating company)ExchangesShare
Verizon New England INC.1024%
New Cingular Wireless PCS, LLC - DC615%
Cellco Partnership d/b/a Verizon Wireless - Ma512%
Level 3 Communications, LLC - Ma49.8%
Mcimetro Access Transmission Services LLC49.8%
Omnipoint Miami E License, LLC37.3%
Paetec Itel, LLC37.3%
TC Systems, INC.24.9%
Onvoy, LLC - Ma12.4%
RCN Telecom Services, INC. - Ma12.4%
Bandwidth.com CLEC, LLC - Ma12.4%
Comcast Ip Phone, LLC12.4%

Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.

Exchanges (NPA-NXX) assigned in Dedham

These are the central office codes NANPA records for Dedham. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. 1 of the 41 were assigned in 2020 or later.

Prefixes assigned in Dedham, MA
Area codePrefixes (NXX)
339204, 213
617365, 462, 640, 759
781223, 234, 251, 310, 320, 326, 329, 355, 366, 375, 379, 381, 403, 407, 410, 441, 459, 461, 467, 468, 471, 492, 493, 613, 636, 686, 690, 708, 742, 747, 751, 752, 801, 809, 915

Source: NANPA utilized central office code file.

When Dedham's exchanges were assigned

Assignment dates show when each block of Dedham numbers was added to the local supply.

Dedham, MA: exchanges by decade assigned
Decade assignedExchangesShare
2000s330%
2010s660%
2020s110%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

How local numbers work in Dedham

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Dedham's numbers are rated to the DEDHAM rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Dedham number.

New local numbers are drawn from carrier inventory, so the exact 781 numbers available change over time; porting an existing number is free.

The local business market

Dedham is part of the Boston-Cambridge-Newton, MA-NH metro area, home to 5.0 million people in 2024. County Business Patterns counted 133,807 business establishments in the Boston, MA-NH metro area in 2023, employing 2,681,704 people. The largest sectors by establishment count are professional, scientific, and technical services (17,803), retail trade (15,568), and health care and social assistance (15,127).

Selected industries in the Boston, MA-NH metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Full-service restaurants4,652104,68922.5
Limited-service restaurants3,92051,82513.2
Residential remodelers3,26311,1123.4
Law offices2,96724,7078.3
Landscaping services2,87612,4944.3
Dental offices2,41919,3138.0
Plumbing, heating and air-conditioning contractors2,16922,86010.5
Beauty salons2,02510,9955.4

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

Business phone service in Dedham

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

If you already have a number in Dedham, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Boston, MA-NH metro area, 20 users on RingCentral RingEX Core come to $600.00 a month and on Ooma Office Pro $499.00, at month-to-month list prices checked September 28, 2026. On Callata the same 20 people cost $399.00 a month, less than either per-seat plan.

Monthly list price for a 20-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$399.00$4,788.00
Quo (Starter)$19.00 per user$380.00$4,560.00
Nextiva (Core)$23.00 per user$460.00$5,520.00
Ooma (Office Pro)$24.95 per user$499.00$5,988.00
Dialpad (Standard)$27.00 per user$540.00$6,480.00
RingCentral (RingEX Core)$30.00 per user$600.00$7,200.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Frequently asked questions

What area code is Dedham, MA?

Dedham has exchanges in 781, 617, and 339; 781 has the most.

How many phone companies have exchanges in Dedham?

12, holding 41 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Dedham business number?

Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.

How much is a business phone line in Dedham?

Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 20 users come to $399.00 a month. For comparison, 20 users on RingCentral RingEX Core list at $600.00 a month (checked September 28, 2026).