Get a local business phone number in Callahan, FL
Callahan's area code, prefixes and carriers from NANPA records, and how to put a Callahan number in front of your customers.
- Area code
- 904
- Exchanges
- 9NANPA-assigned
- Carriers
- 5
- Population
- 1,785Census 2024 est.
Callahan area codes
Callahan town is a Census place in Nassau County, Florida, with an estimated 1,785 residents in 2024. All 9 exchanges NANPA lists for its rate center are in area code 904. 904 is part of an overlay with 324, so a new local number in Callahan may carry any of those codes depending on which have numbers available. Callahan is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 904 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 904 | 9 | 100% | 1965 | 324 | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Callahan exchanges by carrier
5 carriers hold the 9 exchanges assigned to Callahan's rate center. Windstream Florida, INC. has the most, with 3. 8 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Callahan can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Windstream Florida, INC. | 3 | 33% |
| Powertel Jacksonville Licenses, INC. | 2 | 22% |
| Level 3 Communications, LLC - FL | 2 | 22% |
| Comcast Ip Phone, LLC | 1 | 11% |
| Onvoy Spectrum, LLC | 1 | 11% |
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.
Callahan phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Callahan. The earliest assignment date recorded in the file for these codes is 2006. 2 of the 9 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 904 | 320, 341, 507, 628, 715, 879, 935, 980, 989 |
Source: NANPA utilized central office code file.
When Callahan's exchanges were assigned
Assignment dates show when each block of Callahan numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 20% |
| 2010s | 2 | 40% |
| 2020s | 2 | 40% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Callahan
NANPA ties every exchange to a rate center. For Callahan that is CALLAHAN, so a number from one of these exchanges reads as local to people in and around Callahan.
If your business already has a Callahan number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Callahan is part of the Jacksonville, FL metro area, home to 1.8 million people in 2024. County Business Patterns counted 44,152 business establishments in the Jacksonville, FL metro area in 2023, employing 664,343 people. The largest sectors by establishment count are professional, scientific, and technical services (5,674), retail trade (5,351), and health care and social assistance (5,184).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Physician practices | 1,583 | 19,619 | 12.4 |
| Offices of real estate agents and brokers | 1,401 | 2,774 | 2.0 |
| Limited-service restaurants | 1,373 | 26,797 | 19.5 |
| Full-service restaurants | 1,267 | 31,385 | 24.8 |
| Law offices | 900 | 5,867 | 6.5 |
| Residential remodelers | 795 | 2,330 | 2.9 |
| Landscaping services | 794 | 5,707 | 7.2 |
| Management consulting firms | 667 | 2,674 | 4.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Callahan
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 Callahan, 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 Jacksonville, FL metro 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 Callahan, FL?
904. All exchanges NANPA lists for Callahan are in 904.
How many phone companies have exchanges in Callahan?
5, holding 9 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Callahan 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 Callahan?
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).