Get a local business phone number in Canterbury, NH
Canterbury's area code, prefixes and carriers from NANPA records, and how to put a Canterbury number in front of your customers.
- Area code
- 603
- Exchanges
- 2NANPA-assigned
- Carriers
- 2
- Population
- 2,467Census 2024 est.
What area code is Canterbury, NH?
Canterbury town is a Census town in Merrimack County, New Hampshire, with an estimated 2,467 residents in 2024. All 2 exchanges NANPA lists for its rate center are in area code 603. Canterbury 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 | 2 | 100% | 1947 | none | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Canterbury exchanges by carrier
2 carriers hold the 2 exchanges assigned to Canterbury's rate center. Comcast Ip Phone, LLC has the most, with 1. 2 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Canterbury can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Comcast Ip Phone, LLC | 1 | 50% |
| Consolidated Comm of No. New England-nh | 1 | 50% |
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.
Canterbury phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Canterbury. The earliest assignment date recorded in the file for these codes is 2005. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 603 | 708, 783 |
Source: NANPA utilized central office code file.
What makes a number local to Canterbury
NANPA ties every exchange to a rate center. For Canterbury that is CANTERBURY, so a number from one of these exchanges reads as local to people in and around Canterbury.
Keeping an existing Canterbury number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 603 when you pick it.
Businesses around Canterbury
Canterbury is part of the Concord, NH micropolitan area, home to 158,000 people in 2024. County Business Patterns counted 4,213 business establishments in the Concord, NH micropolitan area in 2023, employing 62,841 people. The largest sectors by establishment count are construction (546), retail trade (545), and other services (except public administration) (536).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 124 | 2,444 | 19.7 |
| Landscaping services | 115 | 896 | 7.8 |
| Limited-service restaurants | 107 | 1,699 | 15.9 |
| Plumbing, heating and air-conditioning contractors | 99 | 823 | 8.3 |
| Electrical contractors | 85 | 321 | 3.8 |
| Law offices | 84 | 687 | 8.2 |
| General automotive repair shops | 81 | 338 | 4.2 |
| Child day care services | 62 | 648 | 10.5 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Canterbury
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 Canterbury, 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 Concord, NH micropolitan area, 15 users on RingCentral RingEX Core come to $450.00 a month and on Ooma Office Pro $374.25, at month-to-month list prices checked September 28, 2026. On Callata the same 15 people cost $299.00 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 | $299.00 | $3,588.00 |
| Quo (Starter) | $19.00 per user | $285.00 | $3,420.00 |
| Nextiva (Core) | $23.00 per user | $345.00 | $4,140.00 |
| Ooma (Office Pro) | $24.95 per user | $374.25 | $4,491.00 |
| Dialpad (Standard) | $27.00 per user | $405.00 | $4,860.00 |
| RingCentral (RingEX Core) | $30.00 per user | $450.00 | $5,400.00 |
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 Canterbury, NH?
603. All exchanges NANPA lists for Canterbury are in 603.
How many phone companies have exchanges in Canterbury?
2, holding 2 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Canterbury 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 Canterbury?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 15 users come to $299.00 a month. For comparison, 15 users on RingCentral RingEX Core list at $450.00 a month (checked September 28, 2026).