CallataGuidesGet a local business phone number in Danville, CA
Danville's area code, prefixes and carriers from NANPA records, and how to put a Danville number in front of your customers.
- Area code
- 925
- Exchanges
- 38NANPA-assigned
- Carriers
- 14
- Population
- 43,410Census 2024 est.
Area codes in Danville
Danville, in Contra Costa County, California, had a Census-estimated population of 43,410 in July 2024. All 38 exchanges NANPA lists for its rate center are in area code 925. Danville is in the Pacific time zone.
According to NANPA's dialing-plan data, local calls within 925 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 925 | 38 | 100% | 1998 | none | Pacific |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Danville
14 carriers hold the 38 exchanges assigned to Danville's rate center. Pacific Bell has the most, with 12. 28 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Pacific Bell | 12 | 32% |
| New Cingular Wireless PCS, LLC | 4 | 11% |
| Level 3 Communications, LLC - CA | 3 | 7.9% |
| Mcimetro Access Transmission Services LLC | 3 | 7.9% |
| Metropcs, INC. | 3 | 7.9% |
| U.s. Telepacific Corp. d/b/a TPX Communications | 3 | 7.9% |
| T-mobile USA, INC. | 2 | 5.3% |
| Onvoy, LLC - CA | 2 | 5.3% |
| Teleport Communications America, LLC - CA | 1 | 2.6% |
| Level 3 Telecom of California, LP - CA | 1 | 2.6% |
| American Messaging Services, LLC | 1 | 2.6% |
| Fractel, LLC | 1 | 2.6% |
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.
Exchanges (NPA-NXX) assigned in Danville
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Danville. The earliest assignment date recorded in the file for these codes is 2001. 5 of the 38 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 925 | 205, 208, 217, 263, 272, 309, 314, 345, 362, 389, 406, 486, 502, 540, 552, 553, 575, 594, 648, 678, 683, 718, 725, 733, 736, 743, 791, 820, 831, 837, 838, 854, 855, 856, 886, 915, 964, 984 |
Source: NANPA utilized central office code file.
When Danville's exchanges were assigned
Assignment dates show when each block of Danville numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 4 | 44% |
| 2020s | 5 | 56% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Danville
NANPA ties every exchange to a rate center. For Danville that is DANVILLE, so a number from one of these exchanges reads as local to people in and around Danville.
If your business already has a Danville number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Danville is part of the San Francisco-Oakland-Fremont, CA metro area, home to 4.6 million people in 2024. County Business Patterns counted 133,246 business establishments in the San Francisco, CA metro area in 2023, employing 2,417,363 people. The largest sectors by establishment count are professional, scientific, and technical services (23,140), health care and social assistance (16,920), and accommodation and food services (13,736).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 5,136 | 86,434 | 16.8 |
| Limited-service restaurants | 4,140 | 59,849 | 14.5 |
| Dental offices | 3,029 | 19,225 | 6.3 |
| Offices of real estate agents and brokers | 2,990 | 10,454 | 3.5 |
| Law offices | 2,984 | 25,802 | 8.6 |
| Custom computer programming services firms | 2,959 | 58,995 | 19.9 |
| Residential remodelers | 2,924 | 14,184 | 4.9 |
| Management consulting firms | 2,756 | 16,952 | 6.2 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Danville
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 Danville, 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.
An 18-person team is the benchmark here, the rounded average establishment size in the San Francisco, CA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $540.00 a month and Ooma Office Pro $449.10. On Callata the same 18 people cost $359.00 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 | $359.00 | $4,308.00 |
| Quo (Starter) | $19.00 per user | $342.00 | $4,104.00 |
| Nextiva (Core) | $23.00 per user | $414.00 | $4,968.00 |
| Ooma (Office Pro) | $24.95 per user | $449.10 | $5,389.20 |
| Dialpad (Standard) | $27.00 per user | $486.00 | $5,832.00 |
| RingCentral (RingEX Core) | $30.00 per user | $540.00 | $6,480.00 |
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 Danville, CA?
925. All exchanges NANPA lists for Danville are in 925.
How many phone companies have exchanges in Danville?
14, holding 38 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Danville 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 Danville?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 18 users come to $359.00 a month. For comparison, 18 users on RingCentral RingEX Core list at $540.00 a month (checked September 28, 2026).