Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

Block: A

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-404 A Madisonville TN KNVLTNJHGT0  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 474      
423-405 A Athens TN KNVLTNTWBMD  6664 SPRINT SPECTRUM L.P. 474      
423-406 A Midway (Sullivan) TN JHCYTNXCXHY  318J COMCAST IP PHONE LLC 956      
423-407 A Spring City TN CHTGTNNSXGZ  204G TWIN LAKES COMMUNICATIONS, INC. - TN 472      
423-408 A Kingsport TN JHCYTNXCXRX  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 956      
423-409 A Bulls Gap TN KNVLTNMA78Z  6630 USA MOBILITY WIRELESS, INC. 474      
423-410 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-412 A Johnson City TN JHCYTNXCXNX  6630 USA MOBILITY WIRELESS, INC. 956   2021-02-10   
423-413 A Chattanooga TN CHTGTNNSX1X  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-414 A Chattanooga TN CHTHTNPWDS0  967F PEACE COMMUNICATIONS, LLC - TN 472      
423-415 A Newport TN KNVNTN76CM0  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474      
423-416 A Midway (Sullivan) TN BRSTTN02CM1  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-417 A Chattanooga TN CHTGTN12X8X  7278 BROOKS FIBER COMMUNICATIONS OF TENNESSEE, INC.- TN 472      
423-418 A Midway (Sullivan) TN BRSTTN02CM1  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-419 A Cumberland Gap TN DAVLKYMAX2X  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 466      
423-420 A Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-421 A Chattanooga TN CHTGTN100MD  6664 SPRINT SPECTRUM L.P. 472      
423-422 A Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-424 A Chattanooga TN CHTGTNKFDS0  8356 US LEC OF TENNESSEE, INC 472      
423-425 A Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-426 A Limestone TN BRSTTN02CM1  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-427 A Johnson City TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-428 A Dayton TN CHTHTNDNXMD  4622 DELTACOM, INC. - TN 472      
423-429 A Kingsport TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-430 A Johnson City TN JHCYTNXCX0Y  551G BRIGHTLINK COMMUNICATIONS, LLC 956      
423-431 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-432 A Chattanooga TN CHTGTN100MD  6664 SPRINT SPECTRUM L.P. 472      
423-433 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-434 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-435 A Athens TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-436 A Madisonville TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-437 A La Follette TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-438 A Morristown TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-439 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-440 A Elizabethton TN BRSTTN02CM1  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-441 A Cumberland Gap TN WNCHKYMAWMD  6664 SPRINT SPECTRUM L.P. 466      
423-442 A Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-443 A Chattanooga TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472      
423-444 A Limestone TN BRSTTN02CM1  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-445 A Surgoinsville TN KNVLTNMA84Z  516C AT&T CORP. 474      
423-446 A Fall Branch TN JHCYTNXCX1Y  7575 CENTURYLINK COMMUNICATIONS LLC 956      
423-447 A Pikeville TN PKVLTNXADS1  0554 BLEDSOE TELEPHONE COOPERATIVE 472      
423-448 A Pikeville TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-449 A La Follette TN KNVMTNVODS0  4622 DELTACOM, INC. - TN 474      
423-450 A Mosheim TN JHCYTNXCXHY  318J COMCAST IP PHONE LLC 956      
423-451 A Soddy Daisy TN SDDSTNMARS5  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-452 A Spring City TN SPCYTNMTRS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-453 A Athens TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-454 A Decatur TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472      
423-455 A Jellico TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >>

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.