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
423-417 4 Chattanooga TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-417 5 Chattanooga TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-417 6 Chattanooga TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-417 7 Chattanooga TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-417 8 Chattanooga TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472      
423-417 9 Chattanooga TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472      
423-418 A Midway (Sullivan) TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-418 0 Midway (Sullivan) TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-418 1 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-418 2 Midway (Sullivan) TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-418 3 Midway (Sullivan) TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-418 4 Midway (Sullivan) TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-418 5 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-418 6 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-418 7 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-418 8 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-418 9 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-419 A Cumberland Gap TN LXTNKY24X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 466      
423-419 0 Cumberland Gap TN LXTNKY24X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 466      
423-419 1 Cumberland Gap TN LXTNKYXAX2Z  525E ONVOY, LLC - TN 466      
423-419 2 Cumberland Gap TN WNCHKYATX5X  5562 METROPCS, INC. 466      
423-419 3 Cumberland Gap TN LXTNKYXAX2Z  525E ONVOY, LLC - TN 466      
423-419 4 Cumberland Gap TN   525E ONVOY, LLC - TN 466      
423-419 5 Cumberland Gap TN GRTWKYMAJMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 466      
423-419 6 Cumberland Gap TN WNCHKYMAXUX  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 466      
423-419 7 Cumberland Gap TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 466      
423-419 8 Cumberland Gap TN DAVLKYMAX7X  073H TELNYX LLC 466      
423-419 9 Cumberland Gap TN LXTNKY24X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 466      
423-420 A Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-420 0 Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-420 1 Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-420 2 Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-420 3 Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-420 4 Madisonville TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474      
423-420 6 Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-420 7 Madisonville TN   7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-420 9 Madisonville TN MDVITNMTDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 474      
423-421 A Chattanooga TN   5562 METROPCS, INC. 472      
423-421 0 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 1 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 2 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 3 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 4 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 5 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 6 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 7 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 8 Chattanooga TN CHTGTNOXZMD  5562 METROPCS, INC. 472      
423-421 9 Chattanooga TN   7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-422 A Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 0 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 1 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 2 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 3 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 4 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 5 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 6 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 7 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-422 8 Mosheim TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-422 9 Mosheim TN MOSHTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-424 A Chattanooga TN   829J PAETEC ITEL, LLC 472   2024-12-05   
423-424 0 Chattanooga TN   829J PAETEC ITEL, LLC 472      
423-424 1 Chattanooga TN   829J PAETEC ITEL, LLC 472      
423-424 2 Chattanooga TN   829J PAETEC ITEL, LLC 472      
423-424 3 Chattanooga TN   829J PAETEC ITEL, LLC 472      
423-424 4 Chattanooga TN   829J PAETEC ITEL, LLC 472      
423-424 5 Chattanooga TN   829J PAETEC ITEL, LLC 472      
423-424 6 Chattanooga TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-424 7 Chattanooga TN   829J PAETEC ITEL, LLC 472      
423-424 8 Chattanooga TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-424 9 Chattanooga TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-425 A Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 0 Chattanooga TN   9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 1 Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 2 Chattanooga TN CHTITNCDDS0  4645 ELECTRIC POWER BOARD OF CHATTANOOGA 472      
423-425 3 Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 4 Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 5 Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 6 Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 7 Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 8 Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-425 9 Chattanooga TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472      
423-426 A Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 0 Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 1 Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 2 Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 3 Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 4 Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 5 Limestone TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-426 6 Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 7 Limestone TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-426 8 Limestone TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956      
423-426 9 Limestone TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-427 A Johnson City TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-427 0 Johnson City TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-427 1 Johnson City TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-427 2 Johnson City TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-427 3 Johnson City TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-427 4 Johnson City TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-427 5 Johnson City TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-427 6 Johnson City TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      

<< 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: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.