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
423-200 A Morristown TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-201 A La Follette TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-202 A Johnson City TN JHCYTNXCX3X  7278 BROOKS FIBER COMMUNICATIONS OF TENNESSEE, INC.- TN 956      
423-205 A Etowah TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474      
423-206 A Chattanooga TN CHTGTNNSXOZ  156J RCLEC INC 472      
423-207 A Midway (Washington) TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-208 A Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-209 A Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-210 A Tellico Plains TN KNVLTNMA31Z  6278 UNITED STATES CELLULAR CORP. - TENNESSEE 474      
423-212 A Blountville TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-213 A Elizabethton TN JHCYTNDJAMD  6664 SPRINT SPECTRUM L.P. 956      
423-214 A Englewood TN KNVLTNMA31Z  6278 UNITED STATES CELLULAR CORP. - TENNESSEE 474      
423-215 A Oneida TN ONEDTNXA2MD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474      
423-216 A Benton TN CHTHTNDNXMD  4622 DELTACOM, INC. - TN 472      
423-217 A Bristol TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-218 A Johnson City TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-219 A Charleston TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-220 A Erwin TN JHCYTNXC6MD  8356 US LEC OF TENNESSEE, INC 956      
423-221 A Chattanooga TN CHTGTNBRDS0  6630 USA MOBILITY WIRELESS, INC. 472      
423-222 A Morristown TN MRTWTNMADS0  6864 PAGEPRO CORPORATION 474      
423-223 A Oneida TN KNVLTNJHGT0  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 474      
423-224 A Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-225 A Benton TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472      
423-226 A Church Hill TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-227 A Chattanooga TN CHTGTNOXEMD  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-228 A South Pittsburg TN CHTGTNKFDS0  8356 US LEC OF TENNESSEE, INC 472      
423-229 A Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-230 A Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-231 A Morristown TN KNVLTNJHGT0  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 474      
423-232 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-233 A Johnson City TN JHCYTNXCPS0  6880 PRO PAGE PARTNERS, LLC 956      
423-234 A Baileyton TN BLTNTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-235 A Bulls Gap TN BLGPTNMARS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-236 A Apison TN APSNTNXARS5  0574 CENTURYTEL OOLTEWAH-COLLEGEDALE DBA CENTURYLINK 472      
423-237 A Newport TN KNVLTNJHGT0  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 474      
423-238 A Ooltewah TN OLTWTNXADS1  0574 CENTURYTEL OOLTEWAH-COLLEGEDALE DBA CENTURYLINK 472      
423-239 A Midway (Sullivan) TN MDWYTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-240 A Chattanooga TN CHTGTNNSX1X  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-241 A Copper Basin TN CHTGTNNSX1X  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-242 A Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-243 A Soddy Daisy TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-244 A Cleveland TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-245 A Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-246 A Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-247 A Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-248 A Newport TN KNVLTNMA31Z  6278 UNITED STATES CELLULAR CORP. - TENNESSEE 474      
423-249 A Fork Ridge TN MDBOKYMADS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 466      
423-250 A Cleveland TN CHTGTNNSXGZ  204G TWIN LAKES COMMUNICATIONS, INC. - TN 472      
423-251 A Kingsport TN JHCYTNXCX2Y  5562 METRO PCS, INC. 956      
423-252 A Athens TN KNVLTN02DS1  8356 US LEC OF TENNESSEE, INC 474      

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

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.