Area code 928: Arizona
Area code 928 is a US state area code for Arizona, on Mountain Standard Time. It has 631 prefixes in service across 94 rate centers, the largest being Yuma, Flagstaff and Prescott. NANPA lists no overlay code for it. Local calls there take 10 digits.
Local time in area code 928
America/Phoenix
Prefixes in service
631 of 792 possible
94 rate centers
Area code 928 facts
| Location | Arizona, United States |
|---|---|
| Time zone | Mountain Standard TimeArizona doesn't observe daylight saving time, but the Navajo Nation in north-east Arizona does. |
| Overlays | None |
| Split from | 520 |
| In service since | June 23, 2001 |
| Local calls | 10 digits; toll calls 1 + 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
Which cities and towns use area code 928?
NANPA records each prefix against a rate center, the local billing area a number belongs to, usually named after its main town. These are the 928 rate centers with the most prefixes in service. 82 smaller ones aren't listed.
| Rate center | Prefixes |
|---|---|
| Yuma | 65 |
| Flagstaff | 63 |
| Prescott | 51 |
| Sedona | 41 |
| Safford | 34 |
| Kingman | 25 |
| Bullhead City | 19 |
| Lake Havasu City | 19 |
| Somerton | 16 |
| Payson | 16 |
| Globe | 15 |
| Page | 12 |
Source: NANPA central office code assignments, file dated 10/17/2026. Each prefix holds up to 10,000 numbers.
How do I dial a 928 number?
NANPA's dialling plan for 928: local calls inside the code take 10 digits, toll calls 1 + 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 928 | 928-555-0147 |
|---|---|
| From another US or Canadian area code | 1-928-555-0147 |
| From outside North America | +1 928 555 0147 |
| E.164, for CRMs and SMS tools | +19285550147 |
When did area code 928 start?
Area code 928 went into service on June 23, 2001, split from 520. It has no overlay, so every number in its area still starts with it.
Tools for 928 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 928 number tells you where it was issued, not what it is now.
Mobiles, landlines and VoIP lines share area codes, and numbers move between carriers. A live line-type and carrier lookup on every number in your list says which is which, and that decides which calling and texting rules apply. It's in the Email + Phone plan.
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Area code 928 questions
- What state is area code 928?
- Area code 928 is in Arizona, United States. Its largest rate centers by number of prefixes are Yuma, Flagstaff, Prescott, Sedona and Safford.
- What time zone is area code 928 in?
- Mountain Standard Time. Arizona doesn't observe daylight saving time, but the Navajo Nation in north-east Arizona does.
- Does area code 928 have an overlay?
- Not as of NANPA's file dated 10/16/2026. Every number in its area uses 928.
- When did area code 928 start?
- Area code 928 went into service on June 23, 2001, split from 520.
- Is a 928 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
- How many phone numbers does area code 928 have?
- 631 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
Other area codes in Arizona
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and rate centers: NANPA central office code assignments, 10/17/2026. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.