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 |
| 423-274
| 0 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-274
| 1 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-274
| 2 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-274
| 3 |
Bristol |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2008-12-08 |
|
| 423-274
| 4 |
Bristol |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2009-01-02 |
|
| 423-274
| 5 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-274
| 6 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-274
| 7 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-274
| 8 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-274
| 9 |
Bristol |
TN |
BRSTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-275
| A |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
2024-12-05 |
|
| 423-275
| 0 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2022-09-16 |
|
| 423-275
| 1 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
2022-09-02 |
|
| 423-275
| 2 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2022-12-11 |
|
| 423-275
| 3 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2022-12-11 |
|
| 423-275
| 4 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2022-12-11 |
|
| 423-275
| 5 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2022-12-11 |
|
| 423-275
| 6 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2023-09-03 |
|
| 423-275
| 7 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2023-10-27 |
|
| 423-275
| 8 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2022-09-16 |
|
| 423-275
| 9 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2022-09-16 |
|
| 423-276
| A |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-276
| 0 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-276
| 1 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2006-07-21 |
|
| 423-276
| 2 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2006-07-21 |
|
| 423-276
| 3 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-276
| 4 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-276
| 5 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-276
| 6 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-276
| 7 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2006-09-17 |
|
| 423-276
| 8 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-276
| 9 |
Kingsport |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2006-12-14 |
|
| 423-277
| A |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
|
|
| 423-277
| 0 |
Morristown |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2005-05-19 |
|
| 423-277
| 1 |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
|
|
| 423-277
| 2 |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2006-01-13 |
|
| 423-277
| 3 |
Morristown |
TN |
KNVLTNMA96Z |
5562 METROPCS, INC. |
474 |
|
|
|
| 423-277
| 4 |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2006-06-28 |
|
| 423-277
| 5 |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2007-03-11 |
|
| 423-277
| 6 |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
|
|
| 423-277
| 7 |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2007-06-18 |
|
| 423-277
| 8 |
Morristown |
TN |
KNVLTNMA96Z |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2011-01-26 |
|
| 423-277
| 9 |
Morristown |
TN |
KNVLTNMA96Z |
5562 METROPCS, INC. |
474 |
|
|
|
| 423-278
| A |
Greeneville |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
|
|
| 423-278
| 0 |
Greeneville |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2007-01-26 |
|
| 423-278
| 1 |
Greeneville |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
|
|
| 423-278
| 2 |
Greeneville |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2008-05-08 |
|
| 423-278
| 3 |
Greeneville |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
|
|
| 423-278
| 4 |
Greeneville |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2007-09-24 |
|
| 423-278
| 5 |
Greeneville |
TN |
JHCYTNXCX3X |
7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN |
956 |
|
2007-08-10 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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