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Area code 928

Area code 928 serves Arizona, including Yuma, Flagstaff and Prescott (Mountain time). It has been in service since June 23, 2001.

Numbers starting with 928 drew 3,874 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 1,006 complaints to the FCC since November 2023. The number on your screen can be faked, so a 928 number proves nothing about where a call came from.

Location
Arizona(las Vegas, NV--AZ Msa) and (phoenix--Mesa, AZ Msa)
Time zone
Mountain
In service since
June 23, 2001Created from 520
Overlay
None: the only code for its area
Local calls
Dial 10 digitsArea code needed, even next door
Exchanges in use
637 of 792held by 51 carriers
Projected to run out
4Q 2037NANPA forecast 2026.2

Complaints about 928 numbers

Reports where the number on the consumer's caller ID (or, for the FCC, the number the caller asked them to call back) starts with 928. These are counts of what people reported; the agencies do not verify them.

FTC reports, Aug 14, 2026 to Nov 11, 2026

3,874

FCC complaints since November 2023

1,006

Different 928 numbers reported

4,457

FCC complaints naming a 928 number, by month

November 2023 to October 2026. Source: FCC Consumer Complaints Data.

Show as a table
MonthComplaints
November 202317
December 202310
January 202420
February 20247
March 202411
April 202415
May 202419
June 202422
July 202433
August 202429
September 202421
October 202446
November 202418
December 202424
January 202521
February 202521
March 202533
April 202511
May 202528
June 202532
July 202527
August 202522
September 202519
October 20252
November 202516
December 202518
January 202626
February 202633
March 202623
April 202647
May 202624
June 202626
July 202635
August 202654
September 202650
October 2026119

What people said 928 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 2,357 of 3,874 reports were robocalls.

Show as a table
SubjectReports
Other1,675
Reducing your debt (credit cards, mortgage, student loans)785
Dropped call or no message662
Calls pretending to be government, businesses, or family and friends229
Medical and prescriptions174
Home improvement and cleaning35

Most reported 928 numbers

Numbers with at least five reports from three or more places in the last twelve months. Many of them are likely spoofed.

Places served by 928

NANPA lists 94 rate centers for 928. A rate center is the town or district a block of numbers is tied to for billing; sorted here by how many exchanges each holds.
  • Yuma65
  • Flagstaff63
  • Prescott52
  • Sedona41
  • Safford34
  • Kingman25
  • Bullhead City19
  • Lake Havasu City19
  • Payson16
  • Somerton16
  • Globe15
  • Page12
  • Winslow12
  • Show Low11
  • Wickenburg11
  • Pima10
  • Grand Canyon7
  • Pinetop7
  • Tuba City7
  • Chinle6
  • Gila Bend6
  • Mohave Valley6
  • Springerville6
  • Window Rock6
Show all 94 rate centers

Castle Rock, Holbrook, Parker, Snowflake, Whiteriver, Wikieup, Bullhead City North, Clifton, Ehrenberg, Heber, Parker Dam, Aguila, Blue Ridge, Bouse, Greenehaven, Harquahala Valley, Hyder, Kayenta, Lake Mohave Ranchos, Marble Canyon, Meadview, Mormon Lake, Peach Springs, Quartzsite, Roosevelt Lake, Saint Johns, Salome, Alpine, Arizona Village, Bagdad, Black Mesa, Bonita, Cibola, Colorado City, Dilkon, Duncan, Fort Defiance, Fredonia, Ganado, Greer, Inscription Canyon, Kykotsmovi Village, Lake Pleasant, Littlefield, Mesquite Creek, Pinon Cottonwood, San Carlos, Seligman, Supai, Teec Nos Pos, Yucca, Dennehotso, Greasewood, Kaibito, Keams Canyon, Le Chee, Leupp, Lukachukai, Millsite, Polacca, Red Valley, Rock Point, Rough Rock, Sanders, Shonto, Toyei, Tsaile, Wide Ruins, York Valley, Young.

Phone companies holding 928 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 73% of these exchanges are pooled: their numbers are handed out in blocks of 1,000 to other carriers, so the holder below is not always the company serving a given number.

Exchanges held, top 8 of 51 carriers

NANPA central office code assignments, file of November 11, 2026.

Show as a table
Carrier (legal name)Exchanges
Qwest Corporation95
Cellco Partnership dba Verizon Wireless - AZ91
Onvoy, LLC - AZ66
New Cingular Wireless PCS, LLC45
T-Mobile USA, Inc.40
Teleport Communications America, LLC - AZ31
Level 3 Communications, LLC - AZ26
Navajo Comm CO Inc - AZ dba Frontier Navajo Com26

When today's 928 exchanges were assigned

Exchanges still assigned, by year of assignment. Exchanges returned since are not counted.

Show as a table
YearExchanges
200116
200230
20032
20048
200511
200613
20076
20082
20093
201010
20115
20127
20135
20146
20158
20167
20176
20187
20197
202045
202126
202230
202311
20244
202529
20267

Check a 928 number

A check shows the carrier and rate center of the number's exchange and every FTC and FCC report about that exact number. Why the number on screen can be fake.

Other area codes in Arizona

NANPA area code database and central office code file of November 11, 2026; FCC complaints November 1, 2023 to November 11, 2026; FTC reports August 14, 2026 to November 11, 2026. How the data is used.

Official sources (7)Show