CallataGuidesGet a local business phone number in Tombstone, AZ
Tombstone's area code, prefixes and carriers from NANPA records, and how to put a Tombstone number in front of your customers.
- Area code
- 520
- Exchanges
- 7NANPA-assigned
- Carriers
- 5
- Population
- 1,382Census 2024 est.
Tombstone area codes
With 1,382 residents in the Census 2024 estimate, Tombstone sits in Cochise County, Arizona. All 7 exchanges NANPA lists for its rate center are in area code 520. Tombstone is in the Mountain time zone.
According to NANPA's dialing-plan data, local calls within 520 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 |
|---|---|---|---|---|---|
| 520 | 7 | 100% | 1995 | none | Mountain |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Tombstone
5 carriers hold the 7 exchanges assigned to Tombstone's rate center. Onvoy, LLC - Az has the most, with 2. 7 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Onvoy, LLC - Az | 2 | 29% |
| Cellco Partnership d/b/a Verizon Wireless - Az | 2 | 29% |
| Peerless Network of Arizona, LLC - Az | 1 | 14% |
| Qwest Corporation | 1 | 14% |
| Ip Horizon LLC | 1 | 14% |
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 Tombstone
These are the central office codes NANPA records for Tombstone. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2013. 4 of the 7 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 520 | 210, 412, 453, 457, 506, 581, 679 |
Source: NANPA utilized central office code file.
When Tombstone's exchanges were assigned
Assignment dates show when each block of Tombstone numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2010s | 2 | 33% |
| 2020s | 4 | 67% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Tombstone
What a caller sees as "local" is the area code plus prefix. In Tombstone, those come from the TOMBSTONE rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 520 numbers available change over time; porting an existing number is free.
The local business market
Tombstone is part of the Sierra Vista-Douglas, AZ metro area, home to 126,000 people in 2024. County Business Patterns counted 2,189 business establishments in the Sierra Vista, AZ metro area in 2023, employing 26,077 people. The largest sectors by establishment count are retail trade (366), health care and social assistance (275), and accommodation and food services (272).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 80 | 1,348 | 16.9 |
| Limited-service restaurants | 71 | 1,369 | 19.3 |
| Offices of real estate agents and brokers | 45 | 80 | 1.8 |
| Plumbing, heating and air-conditioning contractors | 44 | 248 | 5.6 |
| Physician practices | 41 | 434 | 10.6 |
| Hotels and motels | 41 | 561 | 13.7 |
| General automotive repair shops | 32 | 125 | 3.9 |
| Residential remodelers | 31 | 150 | 4.8 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Tombstone business line
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.
If you already have a number in Tombstone, 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.
A 12-person team is the benchmark here, the rounded average establishment size in the Sierra Vista, AZ metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $360.00 a month and Ooma Office Pro $299.40. On Callata the same 12 people cost $239.00 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 | $239.00 | $2,868.00 |
| Quo (Starter) | $19.00 per user | $228.00 | $2,736.00 |
| Nextiva (Core) | $23.00 per user | $276.00 | $3,312.00 |
| Ooma (Office Pro) | $24.95 per user | $299.40 | $3,592.80 |
| Dialpad (Standard) | $27.00 per user | $324.00 | $3,888.00 |
| RingCentral (RingEX Core) | $30.00 per user | $360.00 | $4,320.00 |
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 Tombstone, AZ?
520. All exchanges NANPA lists for Tombstone are in 520.
How many phone companies have exchanges in Tombstone?
5, holding 7 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Tombstone 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 Tombstone?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 12 users come to $239.00 a month. For comparison, 12 users on RingCentral RingEX Core list at $360.00 a month (checked September 28, 2026).