Look up any phone number starting with 779 to identify the owner name, address, spam reports, and more. The 779 area code is a telephone area code serving most of northern Illinois.
Enter a full 10-digit number to identify the caller and whether it has been reported as spam.
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Phone numbers with this area code prefix originate from most of northern Illinois, outside the Quad Cities areas. This includes the Joliet area and portions of Chicago’s western and northwestern suburbs.
Area code 779 operates as part of an overlay complex with area code 815 . While 815 was one of the original Illinois area codes assigned in 1947, 779 was introduced to the same numbering plan area in 2009. This overlay system means that both area codes serve the same geographic region. As a result, ten-digit dialing (including the area code) was required for all calls within the 815 area beginning on February 17, 2007, a month before area code 779 was activated.
Area code 779 is a general purpose code which was placed in service on March 17, 2007.
Our reverse phone lookup for Illinois analyzes the three-digit 779 area code to identify the initially assigned telecommunications company and rate center. This prefix code data may help to determine the U.S. carrier, Illinois geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 5 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 4 |
| ONVOY, LLC | 4 |
| SPRINT SPECTRUM, L.P. | 4 |
| COMCAST IP PHONE, LLC | 3 |
| PEERLESS NETWORK OF ILLINOIS, LLC - IL | 3 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 3 |
| BANDWIDTH.COM CLEC, LLC - IL | 2 |
| TELNYX LLC | 2 |
| AT&T CORP. | 1 |
| CHARTER FIBERLINK - ILLINOIS, LLC - IL | 1 |
| DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL | 1 |
| ILLINOIS BELL TEL CO | 1 |
| LOCAL ACCESS LLC - IL | 1 |
| MCLEODUSA TELECOMMUNICATION SERVICES, INC. - IL | 1 |
| MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 1 |
| T-MOBILE USA, INC. | 1 |
| TDS METROCOM, INC. - IL | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| ROCKFORD | 12 |
| JOLIET | 5 |
| CRYSTAL LK | 2 |
| FRANKFORT | 2 |
| SO BELOIT | 2 |
| WILMINGTON | 2 |
| BELVIDERE | 1 |
| BRAIDWOOD | 1 |
| DE KALB | 1 |
| GALENA | 1 |
| KANKAKEE | 1 |
| LA SALLE | 1 |
| NEWMILFORD | 1 |
| PLAINFIELD | 1 |
| POLO | 1 |
| STERLING | 1 |
| SYCAMORE | 1 |
| VERONA | 1 |
| WATSEKA | 1 |
| WOODSTOCK | 1 |
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