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]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-967 0 Kingsport TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-967 1 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 2 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 3 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 4 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 5 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 6 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 7 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 8 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956      
423-967 9 Kingsport TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-968 A Bristol TN BRSTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-972 A Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-972 0 Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-972 1 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-972 2 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-972 3 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-972 4 Greeneville TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-972 5 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-972 6 Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-972 7 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-972 8 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-972 9 Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-973 A Sneedville TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-973 0 Sneedville TN KNVLTNMAYKX  515J IP HORIZON LLC 474      
423-973 1 Sneedville TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474      
423-973 2 Sneedville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474      
423-973 3 Sneedville TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-973 4 Sneedville TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-973 5 Sneedville TN KNVLTNMA84Z  516C AT&T CORP. 474      
423-973 8 Sneedville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474      
423-973 9 Sneedville TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474      
423-975 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-977 A Chattanooga TN CHTGTNNSXPZ  965H FRACTEL, LLC 472      
423-977 0 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-977 1 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-977 2 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-977 5 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-977 6 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-977 7 Chattanooga TN CHTGTNNSXPZ  965H FRACTEL, LLC 472      
423-977 9 Chattanooga TN   124F BANDWIDTH.COM CLEC, LLC - TN 472      
423-979 A Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 0 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 1 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 2 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 3 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 4 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 5 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 6 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 7 Johnson City TN JHCYTNXCPS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-979 8 Johnson City TN GTCYVA02AMD  008A MOUNTAINET TELEPHONE COMPANY - TN 956      
423-979 9 Johnson City TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-980 A Chattanooga TN   525E ONVOY, LLC - TN 472      
423-980 0 Chattanooga TN   525E ONVOY, LLC - TN 472      
423-980 1 Chattanooga TN   939H COMMIO, LLC 472      
423-980 2 Chattanooga TN   939H COMMIO, LLC 472      
423-980 3 Chattanooga TN   939H COMMIO, LLC 472      
423-980 4 Chattanooga TN   478J NUSO, LLC 472      
423-980 7 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-980 9 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-987 A Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-989 A Bristol TN BRSTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-990 A Bristol TN BRSTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-991 A Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-994 A Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-994 0 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-994 1 Chattanooga TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-994 2 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-994 3 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-994 4 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-994 5 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-994 6 Chattanooga TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-994 7 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-994 8 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-994 9 Chattanooga TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-998 A Jellico TN KNVOTNTN0MD  939H COMMIO, LLC 474      
423-998 6 Jellico TN KNVOTNTN0MD  939H COMMIO, LLC 474      
423-998 7 Jellico TN KNVOTNTN0MD  939H COMMIO, LLC 474      
423-998 8 Jellico TN KNVOTNTN0MD  939H COMMIO, LLC 474      
423-998 9 Jellico TN KNVOTNTN0MD  939H COMMIO, LLC 474      
423-999 A Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 0 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 1 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 2 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 3 Athens TN   145J TERRA NOVA TELECOM INC. 474      
423-999 5 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 6 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 7 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 8 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-999 9 Athens TN KNVLTNMA48Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.