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
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 423-979
| 9 |
Johnson City |
TN |
|
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-09-05 |
|
| 423-980
| A |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
|
|
| 423-980
| 0 |
Chattanooga |
TN |
|
525E ONVOY, LLC - TN |
472 |
|
2021-05-30 |
|
| 423-980
| 1 |
Chattanooga |
TN |
|
939H COMMIO, LLC |
472 |
|
2024-02-08 |
|
| 423-980
| 2 |
Chattanooga |
TN |
|
939H COMMIO, LLC |
472 |
|
2024-02-08 |
|
| 423-980
| 3 |
Chattanooga |
TN |
|
939H COMMIO, LLC |
472 |
|
2024-02-08 |
|
| 423-980
| 4 |
Chattanooga |
TN |
|
478J NUSO, LLC |
472 |
|
2024-11-24 |
|
| 423-980
| 7 |
Chattanooga |
TN |
|
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2021-07-17 |
|
| 423-980
| 9 |
Chattanooga |
TN |
|
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2021-07-17 |
|
| 423-981
| A |
Johnson City |
TN |
|
700J WAVENATION, LLC |
956 |
|
2025-09-06 |
|
| 423-981
| 0 |
Johnson City |
TN |
|
700J WAVENATION, LLC |
956 |
|
2025-09-06 |
|
| 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 |
|
|
|
| 423-992
| A |
Bristol |
TN |
|
145J TERRA NOVA TELECOM INC. |
956 |
|
2025-10-09 |
|
| 423-992
| 2 |
Bristol |
TN |
|
145J TERRA NOVA TELECOM INC. |
956 |
|
2025-10-09 |
|
| 423-993
| A |
Chattanooga |
TN |
|
321J HD CARRIER LLC |
472 |
|
2026-01-22 |
|
| 423-993
| 6 |
Chattanooga |
TN |
|
321J HD CARRIER LLC |
472 |
|
2026-01-22 |
|
| 423-993
| 7 |
Chattanooga |
TN |
|
321J HD CARRIER LLC |
472 |
|
2026-01-22 |
|
| 423-993
| 8 |
Chattanooga |
TN |
|
321J HD CARRIER LLC |
472 |
|
2026-01-22 |
|
| 423-993
| 9 |
Chattanooga |
TN |
|
321J HD CARRIER LLC |
472 |
|
2026-01-22 |
|
| 423-994
| A |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
|
|
| 423-994
| 0 |
Chattanooga |
TN |
|
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2007-07-01 |
|
| 423-994
| 1 |
Chattanooga |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2007-09-01 |
|
| 423-994
| 2 |
Chattanooga |
TN |
|
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2009-02-05 |
|
| 423-994
| 3 |
Chattanooga |
TN |
|
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2009-05-08 |
|
| 423-994
| 4 |
Chattanooga |
TN |
|
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2009-05-08 |
|
| 423-994
| 5 |
Chattanooga |
TN |
|
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2009-05-08 |
|
| 423-994
| 6 |
Chattanooga |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2007-09-01 |
|
| 423-994
| 7 |
Chattanooga |
TN |
|
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2009-05-08 |
|
| 423-994
| 8 |
Chattanooga |
TN |
|
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2009-05-08 |
|
| 423-994
| 9 |
Chattanooga |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2007-09-01 |
|
| 423-995
| A |
Johnson City |
TN |
|
321J HD CARRIER LLC |
956 |
|
2026-01-22 |
|
| 423-995
| 6 |
Johnson City |
TN |
|
321J HD CARRIER LLC |
956 |
|
2026-01-22 |
|
| 423-995
| 7 |
Johnson City |
TN |
|
321J HD CARRIER LLC |
956 |
|
2026-01-22 |
|
| 423-995
| 8 |
Johnson City |
TN |
|
321J HD CARRIER LLC |
956 |
|
2026-01-22 |
|
| 423-995
| 9 |
Johnson City |
TN |
|
321J HD CARRIER LLC |
956 |
|
2026-01-22 |
|
| 423-996
| A |
Charleston |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-11-22 |
|
| 423-996
| 0 |
Charleston |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-12-20 |
|
| 423-996
| 1 |
Charleston |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-12-20 |
|
| 423-996
| 2 |
Charleston |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-12-20 |
|
| 423-996
| 3 |
Charleston |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2026-02-22 |
|
| 423-996
| 6 |
Charleston |
TN |
|
145J TERRA NOVA TELECOM INC. |
472 |
|
2025-11-24 |
|
| 423-996
| 9 |
Charleston |
TN |
|
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-11-22 |
|
| 423-997
| A |
Elizabethton |
TN |
|
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2025-10-04 |
|
| 423-997
| 0 |
Elizabethton |
TN |
|
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2025-10-04 |
|
| 423-997
| 7 |
Elizabethton |
TN |
|
145J TERRA NOVA TELECOM INC. |
956 |
|
2025-10-10 |
|
| 423-998
| A |
Jellico |
TN |
KNVOTNTN0MD |
939H COMMIO, LLC |
474 |
|
|
|
| 423-998
| 6 |
Jellico |
TN |
|
939H COMMIO, LLC |
474 |
|
2022-12-10 |
|
| 423-998
| 7 |
Jellico |
TN |
|
939H COMMIO, LLC |
474 |
|
2022-12-10 |
|
| 423-998
| 8 |
Jellico |
TN |
|
939H COMMIO, LLC |
474 |
|
2022-12-10 |
|
| 423-998
| 9 |
Jellico |
TN |
|
939H COMMIO, LLC |
474 |
|
2022-12-10 |
|
| 423-999
| A |
Athens |
TN |
KNVLTNWHX6X |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
|
|
| 423-999
| 0 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2011-05-14 |
|
| 423-999
| 1 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2011-05-27 |
|
| 423-999
| 2 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2011-05-27 |
|
| 423-999
| 3 |
Athens |
TN |
|
145J TERRA NOVA TELECOM INC. |
474 |
|
2024-02-05 |
|
| 423-999
| 5 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2013-03-21 |
|
| 423-999
| 6 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2013-05-12 |
|
| 423-999
| 7 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2013-09-27 |
|
| 423-999
| 8 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2013-10-28 |
|
| 423-999
| 9 |
Athens |
TN |
|
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2011-05-14 |
|
<< 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
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: Callcentric - VoIP Internet phone service
Like this site? We accept donations via PayPal.