CallataGuidesGet a local business phone number in Seabrook, NH
Seabrook's area code, prefixes and carriers from NANPA records, and how to put a Seabrook number in front of your customers.
- Area code
- 603
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 8,432Census 2024 est.
Area codes in Seabrook
With 8,432 residents in the Census 2024 estimate, Seabrook sits in Rockingham County, New Hampshire. All 4 exchanges NANPA lists for its rate center are in area code 603. Seabrook 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 | 4 | 100% | 1947 | none | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Seabrook
4 carriers hold the 4 exchanges assigned to Seabrook's rate center. Freedom Ring Communications, LLC has the most, with 1. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Seabrook can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Freedom Ring Communications, LLC | 1 | 25% |
| Consolidated Comm of No. New England-nh | 1 | 25% |
| Teleport Communications America, LLC - NH | 1 | 25% |
| Comcast Ip Phone, LLC | 1 | 25% |
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 Seabrook
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Seabrook. The earliest assignment date recorded in the file for these codes is 2002. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 603 | 468, 474, 760, 814 |
Source: NANPA utilized central office code file.
When Seabrook's exchanges were assigned
The table groups Seabrook's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 50% |
| 2010s | 1 | 50% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Seabrook
NANPA ties every exchange to a rate center. For Seabrook that is SEABROOK, so a number from one of these exchanges reads as local to people in and around Seabrook.
Keeping an existing Seabrook number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 603 when you pick it.
The local business market
Seabrook 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).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 4,652 | 104,689 | 22.5 |
| Limited-service restaurants | 3,920 | 51,825 | 13.2 |
| Residential remodelers | 3,263 | 11,112 | 3.4 |
| Law offices | 2,967 | 24,707 | 8.3 |
| Landscaping services | 2,876 | 12,494 | 4.3 |
| Dental offices | 2,419 | 19,313 | 8.0 |
| Plumbing, heating and air-conditioning contractors | 2,169 | 22,860 | 10.5 |
| Beauty salons | 2,025 | 10,995 | 5.4 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Seabrook
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 Seabrook 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.
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. Callata comes to $399.00 a month for 20 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per 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 Seabrook, NH?
603. All exchanges NANPA lists for Seabrook are in 603.
How many phone companies have exchanges in Seabrook?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Seabrook 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 Seabrook?
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).