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Get a local business phone number in Douglas, AZ

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

Area code
520
Exchanges
9NANPA-assigned
Carriers
5
Population
15,819Census 2024 est.

Douglas area codes

With 15,819 residents in the Census 2024 estimate, Douglas sits in Cochise County, Arizona. All 9 exchanges NANPA lists for its rate center are in area code 520. Douglas 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 codes with exchanges in Douglas, AZ
Area codeExchanges hereShareIn service sinceOverlay withTime zone
5209100%1995noneMountain

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

Phone carriers in Douglas

5 carriers hold the 9 exchanges assigned to Douglas's rate center. Qwest Corporation 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 Douglas can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Douglas, AZ
Carrier (NANPA operating company)ExchangesShare
Qwest Corporation333%
Onvoy, LLC - Az333%
Ip Horizon LLC111%
Cellco Partnership d/b/a Verizon Wireless - Az111%
New Cingular Wireless PCS, LLC111%

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 Douglas

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Douglas's rate center (DOUGLAS). The earliest assignment date recorded in the file for these codes is 2005. 3 of the 9 were assigned in 2020 or later.

Prefixes assigned in Douglas, AZ
Area codePrefixes (NXX)
520364, 368, 379, 536, 564, 645, 702, 727, 805

Source: NANPA utilized central office code file.

When Douglas's exchanges were assigned

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

Douglas, AZ: exchanges by decade assigned
Decade assignedExchangesShare
2000s233%
2010s117%
2020s350%

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

What makes a number local to Douglas

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

If your business already has a Douglas number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

Businesses around Douglas

Douglas 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).

Selected industries in the Sierra Vista, AZ metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Full-service restaurants801,34816.9
Limited-service restaurants711,36919.3
Offices of real estate agents and brokers45801.8
Plumbing, heating and air-conditioning contractors442485.6
Physician practices4143410.6
Hotels and motels4156113.7
General automotive repair shops321253.9
Residential remodelers311504.8

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

Business phone service in Douglas

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 Douglas, 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 12 users, the rounded average establishment size in the Sierra Vista, AZ metro area. At list prices checked September 28, 2026, that is $299.40 a month on Ooma Office Pro and $360.00 on RingCentral RingEX Core. On Callata the same 12 people cost $239.00 a month, less than either per-seat plan.

Monthly list price for a 12-person team
Provider (plan)Pricing basisPer monthPer 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 Douglas, AZ?

520. All exchanges NANPA lists for Douglas are in 520.

How many phone companies have exchanges in Douglas?

5, holding 9 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Douglas 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 Douglas?

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).