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Area code 224

Area code 224 serves Illinois, including Northbrook, Arlington Heights and Des Plaines (Central time). It has been in service since January 5, 2002 and shares its area with 847.

Numbers starting with 224 drew 1,495 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 576 complaints to the FCC since November 2023. The number on your screen can be faked, so a 224 number proves nothing about where a call came from.

Location
IllinoisChicago-Naperville-Elgin, IL-IN Metropolitan Statistical Area
Time zone
Central
In service since
January 5, 2002Created from 847
Overlay
Same area as 847
Local calls
Dial 1 + 10 digits
Exchanges in use
595 of 792held by 28 carriers
Projected to run out
1Q 2034NANPA forecast 2026.2

Complaints about 224 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 224. These are counts of what people reported; the agencies do not verify them.

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

1,495

FCC complaints since November 2023

576

Different 224 numbers reported

1,890

FCC complaints naming a 224 number, by month

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

Show as a table
MonthComplaints
November 202339
December 202314
January 202423
February 202420
March 20245
April 20249
May 202416
June 202412
July 20248
August 202413
September 202415
October 202415
November 202417
December 20247
January 202515
February 202511
March 20258
April 202511
May 202522
June 202524
July 202517
August 20259
September 20259
October 20251
November 20253
December 202512
January 20267
February 20263
March 202619
April 202643
May 202626
June 202621
July 202619
August 202615
September 202618
October 202630

What people said 224 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 938 of 1,495 reports were robocalls.

Show as a table
SubjectReports
Other675
Reducing your debt (credit cards, mortgage, student loans)313
Calls pretending to be government, businesses, or family and friends152
Dropped call or no message125
Medical and prescriptions40
Home improvement and cleaning24

Most reported 224 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 224

NANPA lists 41 rate centers for 224. 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.
  • Northbrook72
  • Arlington Heights70
  • Des Plaines48
  • Elgin44
  • Waukegan38
  • Algonquin37
  • Deerfield20
  • Barrington19
  • Elk Grove18
  • Wheeling15
  • Glenview14
  • Skokie13
  • Libertyville12
  • Round Lake12
  • Lake Forest11
  • Palatine11
  • Roselle11
  • Evanston10
  • Mundelein10
  • Half Day8
  • Zion8
  • Antioch7
  • Dundee7
  • Fox Lake7
Show all 41 rate centers

Huntley, Lake Villa, Lake Zurich, Cary, Grayslake, Highland Park, Winnetka, Bartlett, Franklin Park, Hampshire, Park Ridge, Wilmette, Bensenville, Glencoe, Plato Center, Wauconda, Pistakee Highlands.

Phone companies holding 224 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 98% 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 28 carriers

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

Show as a table
Carrier (legal name)Exchanges
T-Mobile USA, Inc.138
New Cingular Wireless PCS, LLC - IL93
Cellco Partnership dba Verizon Wireless - IL76
Onvoy, LLC67
Illinois Bell Tel CO34
Fractel, LLC29
Level 3 Communications, LLC - IL19
Teleport Communications America, LLC - IL19

When today's 224 exchanges were assigned

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

Show as a table
YearExchanges
20019
200237
20034
200411
200528
200635
200716
200816
200914
201012
201125
201216
201336
201437
201523
201628
20178
201811
201915
202027
202144
202228
202321
202442
202518
202613

Check a 224 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 Illinois

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