Area Code 623

Area code 623 covers Phoenix, Arizona (Mountain Time (Arizona, no DST)) and nearby Glendale, Peoria and Surprise; overlays 480 and 602 share the same area.

Area code 623 quick facts

LocationPhoenix, Arizona
Time zoneMountain Time (Arizona, no DST)
In service1999-03-01
Overlay codes480, 602
Nearby codes602, 480, 928, 520, 702, 725
Carrier coverage310 prefixes; 44% wireless
FTC complaint data268 complaints across 63 numbers
Data current as ofNovember 2, 2026

Is a call from 623 a scam? Who called me from 623?

FTC complaints involving 623 numbers

63numbers reported
268FTC complaints

Numbers shown with area code 623 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Other”, “No Subject Provided”, “Calls pretending to be government, businesses, or family and friends”.

Most-complained 623 numbers:

These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam. See the most-reported area codes and the most-reported phone numbers nationwide.

Cities in area code 623

Phoenix, Glendale, Peoria, Surprise, Avondale, Sun City West

Area codes by city

Carriers in area code 623

Area code 623 spans 310 prefixes, about 44% wireless. Top carriers: T-MOBILE USA, INC., ONVOY, LLC - AZ, QWEST CORPORATION, CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ. Look up the carrier and line type for a 623 number.

Other Arizona area codes

Nearby area codes

Frequently asked questions

Where is area code 623?

Area code 623 covers Phoenix, Arizona (Mountain Time (Arizona, no DST)) and nearby Glendale, Peoria and Surprise; overlays 480 and 602 share the same area.

What cities use area code 623?

Area code 623 serves Phoenix, Glendale, Peoria, Surprise, Avondale, and 1 other communities in Arizona.

What time zone is area code 623 in?

Area code 623 is in the Mountain Time (Arizona, no DST) (America/Phoenix).

How do you dial a 623 number?

Dial all 10 digits: 623 followed by the 7-digit local number. From abroad, dial +1 623 and the local number.

Is a call from area code 623 a scam?

A 623 number is geographically tied to Arizona, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Is 623 a country code?

No. 623 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 623 number written for international dialing looks like +1 623 followed by the 7-digit local number.

Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of November 2, 2026. Refreshed monthly.