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Get a local business phone number in Candia, NH

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

Area code
603
Exchanges
3NANPA-assigned
Carriers
3
Population
4,218Census 2024 est.

Candia area codes

Candia, in Rockingham County, New Hampshire, had a Census-estimated population of 4,218 in July 2024. All 3 exchanges NANPA lists for its rate center are in area code 603. Candia is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 603 are dialed as ten digits (area code plus number) and toll calls as ten digits (area code plus number).

Area codes with exchanges in Candia, NH
Area codeExchanges hereShareIn service sinceOverlay withTime zone
6033100%1947noneEastern

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

Who holds Candia phone exchanges

3 carriers hold the 3 exchanges assigned to Candia's rate center. Bell Atlantic Mobile, INC has the most, with 1. 3 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Candia can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Candia, NH
Carrier (NANPA operating company)ExchangesShare
Bell Atlantic Mobile, INC133%
Consolidated Comm of No. New England-nh133%
Mcimetro Access Transmission Services LLC - NH133%

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.

Candia phone prefixes

These are the central office codes NANPA records for Candia. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.

Prefixes assigned in Candia, NH
Area codePrefixes (NXX)
603370, 483, 587

Source: NANPA utilized central office code file.

What makes a number local to Candia

What a caller sees as "local" is the area code plus prefix. In Candia, those come from the CANDIA rate center, as recorded by NANPA.

If your business already has a Candia number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

The local business market

Candia 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.

A Candia number on Callata

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.

Porting a number you already use in Candia is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

The comparison below uses 20 users, the rounded average establishment size in the Boston, MA-NH metro area. At list prices checked September 28, 2026, that is $499.00 a month on Ooma Office Pro and $600.00 on RingCentral RingEX Core. Callata comes to $399.00 a month for 20 users ($99 a month with 5 users included, then $20 per additional user), below both.

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 Candia, NH?

603. All exchanges NANPA lists for Candia are in 603.

How many phone companies have exchanges in Candia?

3, holding 3 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Candia 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 Candia?

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).