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Get a local business phone number in Calistoga, CA

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

Area code
707
Exchanges
6NANPA-assigned
Carriers
6
Population
5,022Census 2024 est.

What area code is Calistoga, CA?

Calistoga city is a Census place in Napa County, California, with an estimated 5,022 residents in 2024. All 6 exchanges NANPA lists for its rate center are in area code 707. 707 is part of an overlay with 369, so a new local number in Calistoga may carry any of those codes depending on which have numbers available. Calistoga is in the Pacific time zone.

According to NANPA's dialing-plan data, local calls within 707 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.

Area codes with exchanges in Calistoga, CA
Area codeExchanges hereShareIn service sinceOverlay withTime zone
7076100%1959369Pacific

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

Who holds Calistoga phone exchanges

6 carriers hold the 6 exchanges assigned to Calistoga's rate center. Bandwidth.com CLEC, LLC - CA has the most, with 1. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Calistoga can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Calistoga, CA
Carrier (NANPA operating company)ExchangesShare
Bandwidth.com CLEC, LLC - CA117%
Teleport Communications America, LLC - CA117%
New Cingular Wireless PCS, LLC117%
U.s. Telepacific Corp. d/b/a TPX Communications117%
Level 3 Communications, LLC - CA117%
Pacific Bell117%

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 Calistoga

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Calistoga. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.

Prefixes assigned in Calistoga, CA
Area codePrefixes (NXX)
707341, 403, 661, 709, 737, 942

Source: NANPA utilized central office code file.

When Calistoga's exchanges were assigned

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

Calistoga, CA: exchanges by decade assigned
Decade assignedExchangesShare
2000s267%
2010s133%

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

What makes a number local to Calistoga

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Calistoga's numbers are rated to the CALISTOGA rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Calistoga number.

New local numbers are drawn from carrier inventory, so the exact 707 numbers available change over time; porting an existing number is free.

Businesses around Calistoga

Calistoga is part of the Napa, CA metro area, home to 133,000 people in 2024. County Business Patterns counted 4,486 business establishments in the Napa, CA metro area in 2023, employing 66,372 people. The largest sectors by establishment count are manufacturing (525), construction (504), and retail trade (483).

Selected industries in the Napa, CA metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Wineries4219,05721.5
Full-service restaurants1454,79433.1
Residential remodelers1186605.6
Landscaping services1009269.3
Physician practices894244.8
Limited-service restaurants871,72619.8
Dental offices815977.4
Management consulting firms712313.3

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

A Calistoga number on Callata

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

If you already have a number in Calistoga, 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.

The comparison below uses 15 users, the rounded average establishment size in the Napa, CA metro area. At list prices checked September 28, 2026, that is $374.25 a month on Ooma Office Pro and $450.00 on RingCentral RingEX Core. On Callata the same 15 people cost $299.00 a month, less than either per-seat plan.

Monthly list price for a 15-person team
Provider (plan)Pricing basisPer monthPer 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 Calistoga, CA?

707. All exchanges NANPA lists for Calistoga are in 707.

How many phone companies have exchanges in Calistoga?

6, holding 6 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Calistoga 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 Calistoga?

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).