Get a local business phone number in Flagstaff, AZ
Flagstaff's area codes, prefixes and carriers from NANPA records, and how to put a Flagstaff number in front of your customers.
- Area code
- 928 / 520
- Exchanges
- 64NANPA-assigned
- Carriers
- 15
- Population
- 77,539Census 2024 est.
Flagstaff area codes
Flagstaff city is a Census place in Coconino County, Arizona, with an estimated 77,539 residents in 2024. NANPA lists 64 exchanges for its rate center across 2 area codes; 928 has the most (63, 98%). Flagstaff is in the Mountain time zone.
According to NANPA's dialing-plan data, local calls within 928 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Flagstaff exchanges by carrier
15 carriers hold the 64 exchanges assigned to Flagstaff's rate center. Qwest Corporation has the most, with 19. 35 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Flagstaff can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Qwest Corporation | 19 | 30% |
| Onvoy, LLC - Az | 13 | 20% |
| Cellco Partnership d/b/a Verizon Wireless - Az | 9 | 14% |
| T-mobile USA, INC. | 5 | 7.8% |
| New Cingular Wireless PCS, LLC | 4 | 6.3% |
| Electric Lightwave LLC d/b/a Allstream | 3 | 4.7% |
| Level 3 Communications, LLC - Az | 2 | 3.1% |
| CSC Voice, LLC | 2 | 3.1% |
| Metropcs, INC. | 1 | 1.6% |
| Smith Bagley INC. d/b/a Cellular One of NE Arizona | 1 | 1.6% |
| CSC Wireless, LLC | 1 | 1.6% |
| Commio, LLC | 1 | 1.6% |
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 Flagstaff
These are the central office codes NANPA records for Flagstaff. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. 7 of the 64 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 520 | 491 |
| 928 | 213, 214, 220, 221, 222, 223, 225, 226, 233, 255, 266, 268, 286, 310, 326, 380, 395, 396, 405, 419, 423, 433, 438, 440, 447, 456, 522, 523, 525, 526, 527, 547, 549, 556, 563, 569, 600, 606, 607, 622, 635, 637, 666, 679, 699, 707, 714, 752, 773, 774, 779, 789, 814, 832, 833, 853, 856, 863, 864, 890, 913, 962, 981 |
Source: NANPA utilized central office code file.
When Flagstaff's exchanges were assigned
The table groups Flagstaff's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 6 | 35% |
| 2010s | 4 | 24% |
| 2020s | 7 | 41% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Flagstaff
NANPA ties every exchange to a rate center. For Flagstaff that is FLAGSTAFF, so a number from one of these exchanges reads as local to people in and around Flagstaff.
Keeping an existing Flagstaff number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 928 when you pick it.
The local business market
Flagstaff is part of the Flagstaff, AZ metro area, home to 145,000 people in 2024. County Business Patterns counted 3,955 business establishments in the Flagstaff, AZ metro area in 2023, employing 51,178 people. The largest sectors by establishment count are accommodation and food services (629), retail trade (550), and health care and social assistance (451).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 169 | 4,292 | 25.4 |
| Hotels and motels | 146 | 4,092 | 28.0 |
| Limited-service restaurants | 137 | 3,057 | 22.3 |
| Offices of real estate agents and brokers | 129 | 201 | 1.6 |
| Residential remodelers | 80 | 244 | 3.0 |
| Physician practices | 73 | 504 | 6.9 |
| Janitorial services | 57 | 396 | 6.9 |
| Plumbing, heating and air-conditioning contractors | 54 | 325 | 6.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Flagstaff
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.
Porting a number you already use in Flagstaff is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
The comparison below uses 13 users, the rounded average establishment size in the Flagstaff, AZ metro area. At list prices checked September 28, 2026, that is $324.35 a month on Ooma Office Pro and $390.00 on RingCentral RingEX Core. Callata comes to $259.00 a month for 13 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $259.00 | $3,108.00 |
| Quo (Starter) | $19.00 per user | $247.00 | $2,964.00 |
| Nextiva (Core) | $23.00 per user | $299.00 | $3,588.00 |
| Ooma (Office Pro) | $24.95 per user | $324.35 | $3,892.20 |
| Dialpad (Standard) | $27.00 per user | $351.00 | $4,212.00 |
| RingCentral (RingEX Core) | $30.00 per user | $390.00 | $4,680.00 |
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 Flagstaff, AZ?
Flagstaff has exchanges in 928 and 520; 928 has the most.
How many phone companies have exchanges in Flagstaff?
15, holding 64 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Flagstaff 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 Flagstaff?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 13 users come to $259.00 a month. For comparison, 13 users on RingCentral RingEX Core list at $390.00 a month (checked September 28, 2026).