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Area Code 423

Browse available prefixes, locations, carriers, and quick path links into deeper phone number pages for this area code. Area-code research is one of the most important parts of reverse phone lookup because it gives visitors a geographic starting point before they inspect a full number.

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200Prefixes Listed
TennesseeLocation
United StatesCountry
423Area Code
Area Code Overview
Area Code423
Primary LocationTennessee
CountryUnited States
Prefix Coverage200 listed prefixes
Prefixes in 423
423-200
Knoxville
Level 3 Communications Llc - Tn
Landline
423-201
Knoxville
Level 3 Communications Llc - Tn
Landline
423-202
Bristol
Brooks Fiber Communications Of Tennessee Inc.- Tn
Landline
423-206
Knoxville
Usa Mobility Wireless Inc.
Wireless
423-207
Johnson City
Level 3 Communications Llc - Tn
Landline
423-208
Chattanooga
New Cingular Wireless Pcs Llc - Ga
Wireless
423-209
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-210
Knoxville
United States Cellular Corp. - Tennessee
Wireless
423-212
Johnson City
Level 3 Communications Llc - Tn
Landline
423-213
Johnson City
Sprint Spectrum L.p.
Wireless
423-214
Knoxville
United States Cellular Corp. - Tennessee
Wireless
423-215
Oneida
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-216
Chattanooga
Network Telephone Corporation - Tn
Landline
423-217
Johnson City
Level 3 Communications Llc - Tn
Landline
423-218
Johnson City
Level 3 Communications Llc - Tn
Landline
423-219
Chattanooga
Network Telephone Corporation - Tn
Landline
423-220
Johnson City
Us Lec Of Tennessee Inc
Landline
423-221
Chattanooga
Usa Mobility Wireless Inc.
Wireless
423-222
Morristown
Pagepro Corporation
Landline
423-223
Oneida
New Cingular Wireless Pcs Llc - Ga
Wireless
423-224
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-225
Chattanooga
Alec Llc - Tn
Landline
423-226
Johnson City
Bandwidth.com Clec Llc - Tn
Landline
423-227
Chattanooga
Powertel Atlanta Licenses Inc.
Wireless
423-228
Chattanooga
Us Lec Of Tennessee Inc
Landline
423-229
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-230
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-231
Knoxville
New Cingular Wireless Pcs Llc - Ga
Wireless
423-232
Johnson City
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-233
Johnson City
Pro Page Partners Llc
Landline
423-234
Greeneville
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-235
Bulls Gap
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-236
Apison
Centurytel Ooltewah-collegedale Dba Centurylink
Landline
423-237
Knoxville
New Cingular Wireless Pcs Llc - Ga
Wireless
423-238
Ooltewah
Centurytel Ooltewah-collegedale Dba Centurylink
Landline
423-239
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-240
Chattanooga
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-241
Chattanooga
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-242
Chattanooga
Teleport Communications America Llc - Tn
Landline
423-243
Chattanooga
Teleport Communications America Llc - Tn
Landline
423-244
Chattanooga
Teleport Communications America Llc - Tn
Landline
423-245
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-246
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-247
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-248
Knoxville
United States Cellular Corp. - Tennessee
Wireless
423-249
Middlesboro
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-252
Knoxville
Us Lec Of Tennessee Inc
Landline
423-253
Tellico Plains
Tellico Telephone Co. Inc.
Landline
423-254
Knoxville
Business Telecom Inc. - Bti - Tn
Landline
423-255
Chattanooga
Powertel Atlanta Licenses Inc.
Wireless
423-256
Church Hill
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-257
Limestone
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-258
Knoxville
New Cingular Wireless Pcs Llc - Ga
Wireless
423-259
New Tazewell
United States Cellular Corp. - Tennessee
Wireless
423-260
Chattanooga
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-261
Coker Creek
Tellico Telephone Co. Inc.
Landline
423-262
Johnson City
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-263
Etowah
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-264
Knoxville
Comcast Phone Of Tennessee Llc - Tn
Landline
423-265
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-266
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-267
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-268
Bristol
New Cingular Wireless Pcs Llc - Ga
Wireless
423-269
Chattanooga
Usa Mobility Wireless Inc.
Wireless
423-270
Bristol
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-271
Knoxville
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-272
Rogersville
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-273
Knoxville
Sprint Spectrum L.p.
Wireless
423-274
Bristol
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-275
Chattanooga
Pager One Of Florida - Tennessee
Landline
423-276
Johnson City
New Cingular Wireless Pcs Llc - Ga
Wireless
423-277
Knoxville
Sprint Spectrum L.p.
Wireless
423-278
Greeneville
Telcove Operations Inc. - Tn
Landline
423-279
Blountville
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-280
Chattanooga
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-281
Blountville
Charter Fiberlink - Tennessee Llc - Tn
Landline
423-282
Johnson City
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-283
Johnson City
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-284
Chattanooga
New Cingular Wireless Pcs Llc - Ga
Wireless
423-285
Chattanooga
New Cingular Wireless Pcs Llc - Ga
Wireless
423-286
Oneida
Highland Telephone Cooperative Inc. - Tn
Landline
423-287
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-288
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-289
Knoxville
At&t Local
Landline
423-290
Chattanooga
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-291
Johnson City
Sprint Spectrum L.p.
Wireless
423-292
Johnson City
Suncom Dba T-mobile Usa
Wireless
423-293
Knoxville
Sprint Spectrum L.p.
Wireless
423-294
Chattanooga
Centurytel Acq Llc Dba Centurylink Acquisition-tn
Landline
423-295
Tellico Plains
Tellico Telephone Co. Inc.
Landline
423-296
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-297
Bristol
Telcove Operations Inc. - Tn
Landline
423-298
Chattanooga
At&t Local
Landline
423-299
Chattanooga
Nextel Communications Inc.
Wireless
423-300
Knoxville
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-301
Chattanooga
Brooks Fiber Communications Of Tennessee Inc.- Tn
Landline
423-302
Johnson City
Bandwidth.com Clec Llc - Tn
Landline
423-303
Chattanooga
Us Lec Of Tennessee Inc
Landline
423-304
Chattanooga
New Cingular Wireless Pcs Llc - Ga
Wireless
423-305
Chattanooga
Comcast Phone Of Tennessee Llc - Tn
Landline
423-306
Bristol
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-307
Knoxville
Windstream Norlight Inc. - Tn
Wireless
423-308
Chattanooga
Us Lec Of Tennessee Inc
Landline
423-309
Chattanooga
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-310
Chattanooga
New Cingular Wireless Pcs Llc - Ga
Wireless
423-312
Knoxville
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-313
Chattanooga
Powertel Atlanta Licenses Inc.
Wireless
423-314
Chattanooga
Powertel Atlanta Licenses Inc.
Wireless
423-315
Chattanooga
New Cingular Wireless Pcs Llc - Ga
Wireless
423-316
Chattanooga
Powertel Atlanta Licenses Inc.
Wireless
423-317
Morristown
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-318
Morristown
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-319
Huntsville
Highland Telephone Cooperative Inc. - Tn
Landline
423-320
Chattanooga
Cricket Communications Inc.
Wireless
423-321
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-322
Chattanooga
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-323
Blountville
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-324
Petros
Highland Telephone Cooperative Inc. - Tn
Landline
423-325
Blountville
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-326
Harrison
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-327
Knoxville
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-328
Johnson City
Comcast Phone Of Tennessee Llc - Tn
Landline
423-329
Johnson City
New Cingular Wireless Pcs Llc - Ga
Wireless
423-330
Johnson City
New Cingular Wireless Pcs Llc - Ga
Wireless
423-331
Chattanooga
Powertel Atlanta Licenses Inc.
Wireless
423-332
Soddy Daisy
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-333
Knoxville
Sprint Spectrum L.p.
Wireless
423-334
Decatur
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-335
Bristol
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-336
Charleston
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-337
Sweetwater
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-338
Benton
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-339
Cleveland
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-340
Johnson City
Sprint Spectrum L.p.
Wireless
423-341
Bristol
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-342
Johnson City
New Cingular Wireless Pcs Llc - Ga
Wireless
423-343
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-344
Harrison
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-345
Surgoinsville
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-346
Wartburg
Highland Telephone Cooperative Inc. - Tn
Landline
423-347
Knoxville
Network Telephone Corporation - Tn
Landline
423-348
Fall Branch
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-349
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-350
Carbondale
Si Wireless Llc
Wireless
423-351
Sweetwater
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-352
Knoxville
Us Lec Of Tennessee Inc
Landline
423-353
Knoxville
Windstream Norlight Inc. - Tn
Wireless
423-354
Blountville
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-355
Chattanooga
Cricket Communications Inc.
Wireless
423-356
Chattanooga
Cricket Communications Inc.
Wireless
423-357
Church Hill
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-358
Knoxville
Sprint Spectrum L.p.
Wireless
423-359
Greeneville
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-360
Bristol
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-361
Bristol
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-362
Chattanooga
Cricket Communications Inc.
Wireless
423-363
Huntsville
United States Cellular Corp. - Tennessee
Wireless
423-364
Chattanooga
New Cingular Wireless Pcs Llc - Ga
Wireless
423-365
Spring City
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-366
Johnson City
New Cingular Wireless Pcs Llc - Ga
Wireless
423-367
Johnson City
New Cingular Wireless Pcs Llc - Ga
Wireless
423-368
Knoxville
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-369
Oakdale
Highland Telephone Cooperative Inc. - Tn
Landline
423-370
Knoxville
Alec Llc - Tn
Landline
423-371
Knoxville
Sprint Spectrum L.p.
Wireless
423-372
Knoxville
Alec Llc - Tn
Landline
423-373
Knoxville
Alec Llc - Tn
Landline
423-374
Knoxville
Alec Llc - Tn
Landline
423-375
Chattanooga
Sbc Internet Services Inc.
Landline
423-376
Knoxville
Alec Llc - Tn
Landline
423-377
Knoxville
United States Cellular Corp. - Tennessee
Wireless
423-378
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-379
Knoxville
Alec Llc - Tn
Landline
423-380
Cleveland
Banana Communications Ventures Llc Dba Smart Pcs
Landline
423-381
Knoxville
Sprint Spectrum L.p.
Wireless
423-382
Knoxville
Alec Llc - Tn
Landline
423-383
Johnson City
Suncom Dba T-mobile Usa
Wireless
423-384
Johnson City
Suncom Dba T-mobile Usa
Wireless
423-385
Chattanooga
Us Lec Of Tennessee Inc
Landline
423-386
Chattanooga
Bellsouth Telecomm Inc Dba South Central Bell Tel
Landline
423-387
Chattanooga
Metro Beeper Service Inc.
Landline
423-388
Bristol
Sprint Spectrum L.p.
Wireless
423-389
Bristol
Cellco Partnership Dba Verizon Wireless - Tn
Wireless
423-390
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-391
Bluff City
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-392
Kingsport
United Telephone-southeast-tn Dba Centurylink - Tn
Landline
423-393
Morristown
Charter Fiberlink - Tennessee Llc - Tn
Landline
423-394
Chattanooga
Cricket Communications Inc.
Wireless
423-395
Chattanooga
Usa Mobility Wireless Inc.
Wireless
423-396
Ooltewah
Centurytel Ooltewah-collegedale Dba Centurylink
Landline
423-398
Johnson City
Sprint Spectrum L.p.
Wireless
423-399
Knoxville
Usa Mobility Wireless Inc.
Wireless
423-400
Chattanooga
Sprint Spectrum L.p.
Wireless
423-401
Chattanooga
Us Lec Of Tennessee Inc
Landline
423-402
Chattanooga
Bandwidth.com Clec Llc - Tn
Landline
423-404
Knoxville
New Cingular Wireless Pcs Llc - Ga
Wireless
423-405
Knoxville
Sprint Spectrum L.p.
Wireless
423-406
Johnson City
Comcast Phone Of Tennessee Llc - Tn
Landline
423-407
Knoxville
Usa Mobility Wireless Inc.
Wireless
423-408
Bristol
Teleport Communications America Llc - Tn
Landline

Top prefixes in this area code

423-200→423-201→423-202→423-206→423-207→423-208→423-209→423-210→
Why area code pages matter in reverse phone lookup

Area code pages help visitors understand the wider calling region connected to a number. While a full reverse phone lookup page focuses on one specific caller, an area code page shows the bigger picture by grouping prefixes, cities, and carrier patterns under the same first three digits. This makes it easier to spot whether a number appears local, regional, or part of a service area the visitor already recognizes.

For phone directory websites, area code pages also improve browsing. A user can start with a missed call, discover the number's first three digits, and then move into the related area code to see supporting location data and a list of active prefixes. That layered navigation creates a better research experience and gives visitors more confidence when they continue into a specific number page.