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 |
| 423-664
| 4 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
|
|
| 423-664
| 5 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
|
|
| 423-664
| 6 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2013-08-03 |
|
| 423-664
| 7 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2013-08-03 |
|
| 423-664
| 8 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
|
|
| 423-664
| 9 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
|
|
| 423-665
| A |
Charleston |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
|
|
| 423-665
| 0 |
Charleston |
TN |
CHTGTNMAXVX |
516C AT&T CORP. |
472 |
|
2010-03-24 |
|
| 423-665
| 1 |
Charleston |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
2005-03-12 |
|
| 423-665
| 2 |
Charleston |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-10-20 |
|
| 423-665
| 3 |
Charleston |
TN |
CLEVTNDL1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
472 |
|
2006-06-03 |
|
| 423-665
| 4 |
Charleston |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2004-12-20 |
|
| 423-665
| 5 |
Charleston |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-09-18 |
|
| 423-665
| 6 |
Charleston |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-10-03 |
|
| 423-665
| 7 |
Charleston |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2025-12-15 |
|
| 423-665
| 9 |
Charleston |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2008-11-28 |
|
| 423-666
| A |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
|
|
| 423-666
| 0 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-07-10 |
|
| 423-666
| 1 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-07-10 |
|
| 423-666
| 2 |
Elizabethton |
TN |
JHCYTNXCXAY |
073H TELNYX LLC |
956 |
|
2021-01-23 |
|
| 423-666
| 3 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2023-02-10 |
|
| 423-666
| 4 |
Elizabethton |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2023-04-27 |
|
| 423-666
| 5 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-07-10 |
|
| 423-666
| 6 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-06-16 |
|
| 423-666
| 7 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-06-23 |
|
| 423-666
| 8 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-06-16 |
|
| 423-666
| 9 |
Elizabethton |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-07-10 |
|
| 423-667
| A |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
|
|
| 423-668
| A |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-668
| 0 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2012-10-20 |
|
| 423-668
| 1 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2023-12-14 |
|
| 423-668
| 2 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-668
| 3 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-668
| 4 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-668
| 5 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-668
| 6 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2012-10-20 |
|
| 423-668
| 7 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2023-12-14 |
|
| 423-668
| 8 |
Chattanooga |
TN |
CHTGTNNSXRZ |
318J COMCAST IP PHONE, LLC |
472 |
|
2012-12-21 |
|
| 423-668
| 9 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-669
| A |
Benton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
|
|
| 423-669
| 2 |
Benton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2023-10-14 |
|
| 423-669
| 7 |
Benton |
TN |
|
114J EXIANT COMMUNICATIONS LLC |
472 |
|
2026-10-16 |
|
| 423-669
| 9 |
Benton |
TN |
|
145J TERRA NOVA TELECOM INC. |
472 |
|
2025-11-22 |
|
| 423-670
| A |
Johnson City |
TN |
JHCYTNXCXJY |
515J IP HORIZON LLC |
956 |
|
|
|
| 423-670
| 0 |
Johnson City |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2023-03-11 |
|
| 423-670
| 1 |
Johnson City |
TN |
|
515J IP HORIZON LLC |
956 |
|
2020-11-14 |
|
| 423-670
| 2 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-670
| 3 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-670
| 4 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-670
| 5 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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