Area Code 928 — Phoenix, Arizona

NANP area code

928

UTC−7

State
Arizona
Primary city
Phoenix
Time zone
Mountain (no DST)
In service
2001

The code reaches 168 communities and 11 counties across Arizona.

Was this call legitimate?

The area code itself carries no risk signal. 928 is assigned to Phoenix, Arizona, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 928 territory is a plausible-looking origin for a forged 928 number, which is why one can be made to look like a neighbour to so many people.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Mountain (no DST) · UTC−7

Reasonable callback window

8:00 AM – 9:00 PM

local time in Mountain (no DST)

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes

928 is the only area code serving its territory — it has no overlay in the current numbering plan for Arizona. Where a region has no overlay, a number's area code still corresponds to a single geographic area.

Cities served

largest 20 by ZIP count
Communities served by area code 928, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Phoenix77Maricopa County
Scottsdale15Maricopa County
Flagstaff6Coconino County
Prescott6Yavapai County
Sedona5Coconino County
Yuma5Yuma County
Bullhead City4Mohave County
Lake Havasu City4Mohave County
Kingman3Mohave County
Prescott Valley3Yavapai County
Fort Mohave2Mohave County
Globe2Gila County
Mohave Valley2Mohave County
Payson2Gila County
Quartzsite2La Paz County
Safford2Graham County
Show Low2Navajo County
Wickenburg2Maricopa County
Aguila1Maricopa County
Alpine1Apache County

148 further communities not listed. All Arizona area codes →

Each point is a community served by 928, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 928. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Counties

Prefixes inside 928

We do not publish the NXX prefixes inside 928. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.