The 423 area code is a telephone area code serving East Tennessee, as well as portions of Van Buren and Sequatchie counties in Middle Tennessee. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 423 area code) below and access available caller information such as name, address, and more.
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Area code 423 serves two disconnected areas of East Tennessee, separated by area code 865.
No other cities and towns are explicitly mentioned in the provided context.
Area code 423 is overlaid by area code 729. Area code 423 was created in 1995. Area code 729 was approved on May 30, 2023. Permissive ten-digit dialing started on August 5, 2024, and becomes mandatory on August 5, 2025. Central office code activations for 729 may begin on September 5, 2025.
Area code 423 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 423 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Tennessee geographic region, and local calling area associated with the phone number.
| Company | Number of Prefixes |
|---|---|
| BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 110 |
| UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN | 72 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 51 |
| NEW CINGULAR WIRELESS PCS, LLC - GA | 50 |
| LEVEL 3 COMMUNICATIONS, LLC - TN | 22 |
| SPRINT SPECTRUM, L.P. | 16 |
| SUNCOM DBA T-MOBILE USA | 14 |
| US LEC OF TENNESSEE, INC. | 13 |
| HIGHLAND TEL. COOP, INC. | 9 |
| POWERTEL ATLANTA LICENSES, INC. | 8 |
| BANDWIDTH.COM CLEC, LLC - TN | 7 |
| COMCAST IP PHONE, LLC | 6 |
| TELLICO TEL. CO., INC. | 6 |
| BLEDSOE TEL. COOP. | 5 |
| ELECTRIC POWER BOARD OF CHATTANOOGA | 5 |
| ONVOY, LLC - TN | 5 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 5 |
| CENTURYLINK COMMUNICATIONS LLC - TN | 4 |
| CHARTER FIBERLINK-TENNESSEE, LLC - TN | 4 |
| DELTACOM, INC. - TN | 4 |
| POWERTEL NASHVILLE LICENSES, INC. | 4 |
| AT&T - LOCAL | 3 |
| CENTURYTEL OOLTEWAH-COLLEGEDALE DBA CENTURYLINK | 3 |
| NUSO, LLC | 3 |
| UNITED STATES CELLULAR - TN | 3 |
| CENTURYLINK COMMUNICATIONS, LLC | 2 |
| CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE | 2 |
| FUSION CLOUD SERVICES, LLC | 2 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 2 |
| METROPCS, INC. | 2 |
| MOUNTAINET TELEPHONE COMPANY - VA | 2 |
| WINDSTREAM NORLIGHT, INC. - TN | 2 |
| WINDSTREAM NUVOX, INC. | 2 |
| YMAX COMMUNICATIONS CORP. - TN | 2 |
| AT&T CORP. | 1 |
| BRISTOL TENNESSEE ESSENTIAL SERVICES - TN | 1 |
| BUSINESS TELECOM, INC. DBA BTI - TN | 1 |
| ETC COMMUNICATIONS, L.L.C. - TN | 1 |
| IP HORIZON LLC | 1 |
| MRSTWN UT COMM DBA MRSTWN UT SYS FIBERNET - TN | 1 |
| PEACE COMMUNICATIONS, LLC - TN | 1 |
| SKYBEST COMMUNICATIONS, INC. - TN | 1 |
| SKYLINE TEL. MEMBERSHIP CORP. | 1 |
| TELNYX LLC | 1 |
| Rate Center | Number of Prefixes |
|---|---|
| CHATTNOOGA | 147 |
| JOHNSON CY | 41 |
| CLEVELAND | 25 |
| MORRISTOWN | 22 |
| KINGSPORT | 21 |
| BRISTOL | 20 |
| ATHENS | 16 |
| GREENEVL | 13 |
| LAFOLLETTE | 9 |
| MIDWAY SUL | 8 |
| NEWPORT | 8 |
| ELIZABTHTN | 6 |
| ONEIDA | 6 |
| DAYTON | 5 |
| ERWIN | 5 |
| ROGERSVL | 5 |
| SWEETWATER | 5 |
| BLOUNTVL | 4 |
| MADISONVL | 4 |
| SODDYDAISY | 4 |
| BENTON | 3 |
| BULLS GAP | 3 |
| COPPERBSIN | 3 |
| CUMBERLDGP | 3 |
| FALLBRANCH | 3 |
| JELLICO | 3 |
| JONESBORO | 3 |
| LIMESTONE | 3 |
| NEWTAZWELL | 3 |
| BAILEYTON | 2 |
| BLUFF CITY | 2 |
| BUTLER | 2 |
| CHARLESTON | 2 |
| CHURCHHILL | 2 |
| ETOWAH | 2 |
| GEORGETOWN | 2 |
| MIDWAY | 2 |
| MOSHEIM | 2 |
| MOUNTAINCY | 2 |
| OOLTEWAH | 2 |
| SNEEDVILLE | 2 |
| SO PITTSBG | 2 |
| SPRINGCITY | 2 |
| TELLICO PL | 2 |
| VONORE | 2 |
| APISON | 1 |
| COKERCREEK | 1 |
| COLLEGEDL | 1 |
| COLLEGESTA | 1 |
| DECATUR | 1 |
| DEER LODGE | 1 |
| DUNLAP | 1 |
| ENGLEWOOD | 1 |
| FLCRKFALLS | 1 |
| HAMPTON | 1 |
| HUNTSVILLE | 1 |
| JASPER | 1 |
| NINE MILE | 1 |
| NIOTA | 1 |
| OAKDALE | 1 |
| PETROS | 1 |
| PIKEVILLE | 1 |
| RICEVILLE | 1 |
| ROAN MT | 1 |
| ROBBINS | 1 |
| SHADY VLY | 1 |
| STONEY CRK | 1 |
| SULIVNGDNS | 1 |
| SUNBRIGHT | 1 |
| SURGOINSVL | 1 |
| WARTBURG | 1 |
| WHITWELL | 1 |
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