Local Calling Guide
Area code/prefix search
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 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 423-408
| 5 |
Kingsport |
TN |
|
145J TERRA NOVA TELECOM INC. |
956 |
|
2025-10-06 |
|
| 423-408
| 6 |
Kingsport |
TN |
JHCYTNXCXRX |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
956 |
|
2009-12-21 |
|
| 423-408
| 7 |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
2010-08-31 |
|
| 423-408
| 8 |
Kingsport |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2010-03-08 |
|
| 423-408
| 9 |
Kingsport |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2011-04-08 |
|
| 423-409
| A |
Bulls Gap |
TN |
KNVLTNMA78Z |
6630 SPOK, 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 SPOK, INC. |
956 |
|
|
|
| 423-413
| A |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
|
|
| 423-414
| A |
Chattanooga |
TN |
CHTHTNPWDS0 |
967F PEACE COMMUNICATIONS, LLC - TN |
472 |
|
|
|
| 423-414
| 0 |
Chattanooga |
TN |
CHTHTNPWDS0 |
967F PEACE COMMUNICATIONS, LLC - TN |
472 |
|
2010-05-23 |
|
| 423-414
| 1 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2011-06-10 |
|
| 423-414
| 2 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2012-03-22 |
|
| 423-414
| 3 |
Chattanooga |
TN |
CHTGTN12X8X |
7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN |
472 |
|
2011-01-28 |
|
| 423-414
| 4 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2011-10-13 |
|
| 423-414
| 5 |
Chattanooga |
TN |
CHTGTNNSXCZ |
5562 METROPCS, INC. |
472 |
|
2011-03-25 |
|
| 423-414
| 6 |
Chattanooga |
TN |
CHTGTNNSXCZ |
5562 METROPCS, INC. |
472 |
|
2011-03-25 |
|
| 423-414
| 7 |
Chattanooga |
TN |
CHTGTNNSXCZ |
5562 METROPCS, INC. |
472 |
|
2011-03-25 |
|
| 423-414
| 8 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2011-08-06 |
|
| 423-414
| 9 |
Chattanooga |
TN |
CHTGTNNSXNY |
271E RTC SOLUTIONS, INC. - GA |
472 |
|
2012-04-14 |
|
| 423-415
| A |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
| 423-415
| 0 |
Newport |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2011-03-19 |
|
| 423-415
| 1 |
Newport |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2010-09-06 |
|
| 423-415
| 2 |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2011-01-19 |
|
| 423-415
| 3 |
Newport |
TN |
KNVLTNMA54Z |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
474 |
|
2013-05-15 |
|
| 423-415
| 4 |
Newport |
TN |
KNVLTNMANMD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
474 |
|
2011-07-01 |
|
| 423-415
| 5 |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2013-01-25 |
|
| 423-415
| 6 |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2016-11-07 |
|
| 423-415
| 7 |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2025-02-07 |
|
| 423-415
| 8 |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2013-10-05 |
|
| 423-415
| 9 |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2010-05-08 |
|
| 423-416
| A |
Midway (Sullivan) |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
|
|
| 423-417
| A |
Chattanooga |
TN |
CHTGTN12X8X |
7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN |
472 |
|
|
|
| 423-417
| 0 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2017-10-16 |
|
| 423-417
| 1 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2018-10-19 |
|
| 423-417
| 2 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2017-10-08 |
|
| 423-417
| 3 |
Chattanooga |
TN |
CHTGTN12X8X |
7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN |
472 |
|
2017-10-07 |
|
| 423-417
| 4 |
Chattanooga |
TN |
CHTGTNNSXEY |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
472 |
|
2019-04-01 |
|
| 423-417
| 5 |
Chattanooga |
TN |
CHTGTNNSXEY |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
472 |
|
2019-04-01 |
|
| 423-417
| 6 |
Chattanooga |
TN |
CHTGTNNSXEY |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
472 |
|
2019-04-01 |
|
| 423-417
| 7 |
Chattanooga |
TN |
CHTGTNNSXEY |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
472 |
|
2019-05-08 |
|
| 423-417
| 8 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2023-01-07 |
|
| 423-417
| 9 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2023-01-07 |
|
| 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 |
|
2020-06-18 |
|
| 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 |
|
2018-09-13 |
|
<< 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 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 >>
Last updated: Sat, 10 Oct 2026 15:24:20 UTC
Sponsored by: BeeVox - Whitelabel Reseller Platform
Like this site? We accept donations via PayPal.