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Area code 779

Area code 779 serves Illinois, including Rockford, Joliet and Momence (Central time). It has been in service since March 17, 2007 and shares its area with 815.

Numbers starting with 779 drew 560 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 218 complaints to the FCC since November 2023. The number on your screen can be faked, so a 779 number proves nothing about where a call came from.

Location
Illinois(chicago, IL Pmsa) and Chicago-Naperville-Elgin, IL-IN Metropolitan Statistical Area
Time zone
Central
In service since
March 17, 2007Created from 815
Overlay
Same area as 815
Local calls
Dial 1 + 10 digits
Exchanges in use
354 of 792held by 44 carriers
Projected to run out
2Q 2045NANPA forecast 2026.2

Complaints about 779 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 779. These are counts of what people reported; the agencies do not verify them.

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

560

FCC complaints since November 2023

218

Different 779 numbers reported

739

FCC complaints naming a 779 number, by month

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

Show as a table
MonthComplaints
November 202310
December 20238
January 20246
February 202412
March 20244
April 202413
May 202421
June 20248
July 20243
August 20246
September 202413
October 20247
November 20244
December 20242
January 20253
February 20257
March 20254
April 20258
May 20256
June 20257
July 20253
August 20259
September 20252
October 20250
November 20252
December 20252
January 20264
February 20263
March 20261
April 20263
May 20263
June 20265
July 20262
August 20267
September 20265
October 20265

What people said 779 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 399 of 560 reports were robocalls.

Show as a table
SubjectReports
Other216
Reducing your debt (credit cards, mortgage, student loans)169
Calls pretending to be government, businesses, or family and friends79
Dropped call or no message23
Medical and prescriptions14
Warranties and protection plans7

Places served by 779

NANPA lists 139 rate centers for 779. 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.
  • Rockford44
  • Joliet26
  • Momence20
  • Dekalb15
  • Freeport12
  • Kankakee9
  • Woodstock9
  • Frankfort8
  • Forrest7
  • Mchenry6
  • Plainfield6
  • Sterling6
  • Crystal Lake5
  • South Beloit5
  • Dixon4
  • La Salle4
  • Sandwich4
  • Belvidere3
  • Braidwood3
  • Dwight3
  • Galena3
  • Lockport3
  • Marengo3
  • New Lenox3
Show all 139 rate centers

Oglesby, Pontiac, Streator, Sycamore, Wilmington, Cissna Park, Crescent City, Depue, Fairbury, Harvard, Hinckley, Lanark, Manteno, Mazon, Morris, New Milford, Onarga, Princeton, Rochelle, Spring Valley, Verona, Watseka, Wonder Lake, Ashton, Beaverville, Byron, Cabery, Capron, Cedar Point, Chadwick, Chatsworth, Cherry Valley, Coal City, Coleta, Creston, Danforth, Davis, Donovan, Durand, Elizabeth, Elwood, Emington, Flanagan, Forreston, Franklin Grove, Fulton, Garden Prairie, Genoa, German Valley, Grand Detour, Grand Ridge, Grant Park, Granville, Graymont, Hanover, Harding, Harmon, Herscher, Hooppole, Kempton, Kinsman, Kirkland, Leaf River, Leland, Lena, Lisbon, Long Point, Lostant, Magnolia, Malta, Manhattan, Maple Park, Martinton, Mendota, Milford, Minooka, Monroe Center, Mount Carroll, Mount Morris, Newark, Ohio, Paw Paw, Pecatonica, Piper City, Plattville, Polo, Poplar Grove, Reddick, Richmond, Rock Cut, Rockton, Roscoe, Rutland, Saint Anne, Seward, Shabbona, Sheffield, Sheldon, Sheridan, South Sharon, Spring Grove, Steward, Stockland, Stockton, Thomas, Toluca, Tonica, Union, Warren, Waterman, Wellington, Wenona, Winnebago, Winslow, Woodland.

Phone companies holding 779 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 99% 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 44 carriers

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

Show as a table
Carrier (legal name)Exchanges
Onvoy, LLC48
New Cingular Wireless PCS, LLC - IL43
Stratus Networks35
T-Mobile USA, Inc.25
Fractel, LLC24
Cellco Partnership dba Verizon Wireless - IL23
Bandwidth.com CLEC, LLC - IL16
Ton80 Communications, LLC13

When today's 779 exchanges were assigned

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

Show as a table
YearExchanges
20061
200711
20089
20091
20108
201111
20126
201315
20147
201513
20169
20178
201811
20197
202065
202145
202227
202327
202419
202518
202617

Check a 779 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