Area code 928

About area code 928

NANPA lists 928 as an in-service geographic area code for Arizona, first put into service on June 23, 2001. It is not part of an overlay, so every number in its territory starts with 928. It is in the Mountain time zone. The places with the most assigned exchanges include Yuma, Flagstaff, Prescott, Sedona, and Safford. By population, its largest named places are Yuma, Flagstaff, Lake Havasu City, Prescott, and Bullhead City.

Places served by 928

928 holds 20% of the 3,170 central office codes assigned in Arizona, the 4th most of the state's 5 codes. 27 Census places could be matched to rate centers with 928 exchanges; the most populous are Yuma (104,000), Flagstaff (77,539), Lake Havasu City (59,037), and Prescott (48,224). Each place page lists the exact prefixes and carriers for that town.

Ten-digit and seven-digit dialing in 928

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. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at service provider discretion."

Who holds 928 exchanges

52 carriers hold the 633 central office codes assigned in 928. Qwest Corporation has the most, with 95 (15%). 462 of the codes (73%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Local calling areas in 928

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 928 has codes in 94 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

Number supply in 928

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 633 are assigned in 928, 79% of 800. 148 were assigned in 2020 or later.

A local 928 number on Callata

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in area code 928 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.