Local Calling Guide
Area code/prefix search
NPA: 423
[Rate centres in NPA 423]
[Dial plan for NPA 423]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 423-701
| A |
Robbins |
TN |
KNVLTNMA31Z |
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-701
| 0 |
Robbins |
TN |
KNVLTNMA31Z |
6278 UNITED STATES CELLULAR - TN |
474 |
|
2014-03-30 |
|
| 423-701
| 1 |
Robbins |
TN |
KNVLTNMA31Z |
6278 UNITED STATES CELLULAR - TN |
474 |
|
2016-04-01 |
|
| 423-701
| 2 |
Robbins |
TN |
KNVLTNMAYHX |
318J COMCAST IP PHONE, LLC |
474 |
|
2024-06-13 |
|
| 423-701
| 8 |
Robbins |
TN |
|
145J TERRA NOVA TELECOM INC. |
474 |
|
2025-08-10 |
|
| 423-702
| A |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
|
|
| 423-702
| 0 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2010-04-04 |
|
| 423-702
| 1 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2010-04-04 |
|
| 423-702
| 2 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2012-08-24 |
|
| 423-702
| 3 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2009-12-17 |
|
| 423-702
| 4 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2011-12-31 |
|
| 423-702
| 5 |
Chattanooga |
TN |
CHTGTNNSXRZ |
318J COMCAST IP PHONE, LLC |
472 |
|
2007-10-17 |
|
| 423-702
| 6 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2006-04-07 |
|
| 423-702
| 7 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2007-06-08 |
|
| 423-702
| 8 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2007-06-08 |
|
| 423-702
| 9 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2008-11-03 |
|
| 423-703
| A |
Coker Creek |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
|
|
| 423-703
| 0 |
Coker Creek |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2023-09-18 |
|
| 423-703
| 2 |
Coker Creek |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-04-11 |
|
| 423-703
| 3 |
Coker Creek |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-04-11 |
|
| 423-703
| 4 |
Coker Creek |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2020-01-23 |
|
| 423-703
| 9 |
Coker Creek |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2023-01-07 |
|
| 423-704
| A |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
|
|
| 423-704
| 0 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
|
|
| 423-704
| 1 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2012-06-18 |
|
| 423-704
| 2 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2012-06-18 |
|
| 423-704
| 3 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2012-06-18 |
|
| 423-704
| 4 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2012-06-18 |
|
| 423-704
| 5 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2012-06-18 |
|
| 423-704
| 6 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2012-06-18 |
|
| 423-704
| 7 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
|
|
| 423-704
| 8 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
|
|
| 423-704
| 9 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2019-06-23 |
|
| 423-705
| A |
Johnson City |
TN |
JHCYTNXCXRY |
478J NUSO, LLC |
956 |
|
|
|
| 423-705
| 0 |
Johnson City |
TN |
JHCYTNXCX8Y |
939H COMMIO, LLC |
956 |
|
2022-10-23 |
|
| 423-705
| 1 |
Johnson City |
TN |
JHCYTNXCX8Y |
939H COMMIO, LLC |
956 |
|
2022-10-23 |
|
| 423-705
| 2 |
Johnson City |
TN |
JHCYTNXCXRY |
478J NUSO, LLC |
956 |
|
2022-02-03 |
|
| 423-705
| 3 |
Johnson City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2022-03-17 |
|
| 423-705
| 4 |
Johnson City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2022-03-17 |
|
| 423-705
| 5 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2022-12-10 |
|
| 423-705
| 6 |
Johnson City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2022-08-15 |
|
| 423-705
| 7 |
Johnson City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2022-08-15 |
|
| 423-705
| 8 |
Johnson City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2022-08-15 |
|
| 423-705
| 9 |
Johnson City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2022-08-15 |
|
| 423-706
| A |
Bristol |
TN |
|
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2026-11-22 |
|
| 423-706
| 8 |
Bristol |
TN |
|
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2026-11-22 |
|
| 423-706
| 9 |
Bristol |
TN |
|
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2026-11-22 |
|
| 423-707
| A |
Elizabethton |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
|
|
| 423-707
| 0 |
Elizabethton |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2010-02-11 |
|
| 423-707
| 1 |
Elizabethton |
TN |
JHCYTNXCX8Y |
939H COMMIO, LLC |
956 |
|
2022-10-23 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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