CallataGuidesGet a local business phone number in Claremont, NH
Claremont's area code, prefixes and carriers from NANPA records, and how to put a Claremont number in front of your customers.
- Area code
- 603
- Exchanges
- 8NANPA-assigned
- Carriers
- 6
- Population
- 13,105Census 2024 est.
Area codes in Claremont
Claremont city is a Census place in Sullivan County, New Hampshire, with an estimated 13,105 residents in 2024. All 8 exchanges NANPA lists for its rate center are in area code 603. Claremont 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 code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 603 | 8 | 100% | 1947 | none | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Claremont phone exchanges
6 carriers hold the 8 exchanges assigned to Claremont's rate center. United States Cellular - NH has the most, with 2. 7 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.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| United States Cellular - NH | 2 | 25% |
| Consolidated Comm of No. New England-nh | 2 | 25% |
| Level 3 Communications, LLC - NH | 1 | 13% |
| Freedom Ring Communications, LLC | 1 | 13% |
| Bell Atlantic Mobile, INC | 1 | 13% |
| Mcimetro Access Transmission Services LLC - NH | 1 | 13% |
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.
Local prefixes for Claremont
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Claremont's rate center (CLAREMONT). None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 603 | 287, 372, 477, 504, 542, 543, 558, 690 |
Source: NANPA utilized central office code file.
How local numbers work in Claremont
What a caller sees as "local" is the area code plus prefix. In Claremont, those come from the CLAREMONT rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 603 numbers available change over time; porting an existing number is free.
The local business market
Claremont is part of the Lebanon-Claremont, NH-VT micropolitan area, home to 225,000 people in 2024. County Business Patterns counted 6,513 business establishments in the Lebanon, NH-VT micropolitan area in 2023, employing 91,598 people. The largest sectors by establishment count are retail trade (966), construction (909), and accommodation and food services (735).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 234 | 3,792 | 16.2 |
| Landscaping services | 205 | 824 | 4.0 |
| Residential remodelers | 170 | 530 | 3.1 |
| Limited-service restaurants | 157 | 1,911 | 12.2 |
| Site preparation contractors | 133 | 534 | 4.0 |
| Electrical contractors | 121 | 556 | 4.6 |
| Plumbing, heating and air-conditioning contractors | 113 | 594 | 5.3 |
| General automotive repair shops | 112 | 361 | 3.2 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Claremont business line
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 Claremont, 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 Lebanon, NH-VT micropolitan area, 14 users on RingCentral RingEX Core come to $420.00 a month and on Ooma Office Pro $349.30, at month-to-month list prices checked September 28, 2026. On Callata the same 14 people cost $279.00 a month, less than either per-seat plan.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $279.00 | $3,348.00 |
| Quo (Starter) | $19.00 per user | $266.00 | $3,192.00 |
| Nextiva (Core) | $23.00 per user | $322.00 | $3,864.00 |
| Ooma (Office Pro) | $24.95 per user | $349.30 | $4,191.60 |
| Dialpad (Standard) | $27.00 per user | $378.00 | $4,536.00 |
| RingCentral (RingEX Core) | $30.00 per user | $420.00 | $5,040.00 |
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 Claremont, NH?
603. All exchanges NANPA lists for Claremont are in 603.
How many phone companies have exchanges in Claremont?
6, holding 8 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Claremont 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 Claremont?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 14 users come to $279.00 a month. For comparison, 14 users on RingCentral RingEX Core list at $420.00 a month (checked September 28, 2026).