CallataGuides

Get a local business phone number in Milton, MA

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

Area code
617 / 857
Exchanges
21NANPA-assigned
Carriers
12
Population
28,811Census 2024 est.

Milton area codes

With 28,811 residents in the Census 2024 estimate, Milton sits in Norfolk County, Massachusetts. NANPA lists 21 exchanges for its rate center across 2 area codes; 617 has the most (17, 81%). 617 is part of an overlay with 857, so a new local number in Milton may carry any of those codes depending on which have numbers available. Milton is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 617 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Milton, MA
Area codeExchanges hereShareIn service sinceOverlay withTime zone
6171781%1947857Eastern
857419%2001617Eastern

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

Phone carriers in Milton

12 carriers hold the 21 exchanges assigned to Milton's rate center. Verizon New England INC. has the most, with 5. 15 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Milton can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Milton, MA
Carrier (NANPA operating company)ExchangesShare
Verizon New England INC.524%
New Cingular Wireless PCS, LLC - DC419%
Level 3 Communications, LLC - Ma29.5%
Comcast Ip Phone, LLC29.5%
Paetec Itel, LLC14.8%
TC Systems, INC.14.8%
RCN Telecom Services, INC. - Ma14.8%
Norfolk County Internet, INC.14.8%
Onvoy, LLC - Ma14.8%
Metropcs, INC.14.8%
Bandwidth.com CLEC, LLC - Ma14.8%
Mcimetro Access Transmission Services LLC14.8%

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 Milton

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Milton's rate center (MILTON). The earliest assignment date recorded in the file for these codes is 2001. 1 of the 21 were assigned in 2020 or later.

Prefixes assigned in Milton, MA
Area codePrefixes (NXX)
617273, 291, 296, 298, 313, 322, 433, 609, 615, 690, 696, 698, 898, 907, 915, 922, 980
857267, 314, 419, 598

Source: NANPA utilized central office code file.

When Milton's exchanges were assigned

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

Milton, MA: exchanges by decade assigned
Decade assignedExchangesShare
2000s233%
2010s350%
2020s117%

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

What makes a number local to Milton

NANPA ties every exchange to a rate center. For Milton that is MILTON, so a number from one of these exchanges reads as local to people in and around Milton.

Keeping an existing Milton number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 617 when you pick it.

Businesses around Milton

Milton 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 Milton

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

If you already have a number in Milton, 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.

A 20-person team is the benchmark here, the rounded average establishment size in the Boston, MA-NH metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $600.00 a month and Ooma Office Pro $499.00. 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 Milton, MA?

Milton has exchanges in 617 and 857; 617 has the most.

How many phone companies have exchanges in Milton?

12, holding 21 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Milton 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 Milton?

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).