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 |
| 423-670
| 6 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-01-06 |
|
| 423-670
| 7 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-01-06 |
|
| 423-670
| 8 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2023-02-26 |
|
| 423-670
| 9 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-12-18 |
|
| 423-671
| A |
Chattanooga |
TN |
CHTGTNNSXSZ |
515J IP HORIZON LLC |
472 |
|
|
|
| 423-671
| 0 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2025-03-07 |
|
| 423-671
| 1 |
Chattanooga |
TN |
|
515J IP HORIZON LLC |
472 |
|
2020-11-20 |
|
| 423-671
| 2 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2025-09-19 |
|
| 423-671
| 3 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2025-09-19 |
|
| 423-671
| 4 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2025-09-19 |
|
| 423-671
| 5 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2025-09-19 |
|
| 423-671
| 6 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2021-09-19 |
|
| 423-671
| 7 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2022-09-23 |
|
| 423-671
| 8 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2024-10-04 |
|
| 423-671
| 9 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2024-12-24 |
|
| 423-672
| A |
Johnson City |
TN |
JHCYTNXCXAY |
073H TELNYX LLC |
956 |
|
|
|
| 423-672
| 0 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2022-12-10 |
|
| 423-672
| 1 |
Johnson City |
TN |
JHCYTNXCXAY |
073H TELNYX LLC |
956 |
|
2020-02-17 |
|
| 423-672
| 2 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-672
| 3 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-672
| 4 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-05-22 |
|
| 423-672
| 5 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-05-22 |
|
| 423-672
| 6 |
Johnson City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2021-10-08 |
|
| 423-672
| 7 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2022-12-10 |
|
| 423-672
| 8 |
Johnson City |
TN |
JHCYTNXCX2Y |
8645 SUNCOM DBA T-MOBILE USA |
956 |
|
2022-02-07 |
|
| 423-672
| 9 |
Johnson City |
TN |
JHCYTNXCX2Y |
8645 SUNCOM DBA T-MOBILE USA |
956 |
|
2022-02-07 |
|
| 423-673
| A |
Johnson City |
TN |
JHCYTNXCYZZ |
829J PAETEC ITEL, LLC |
956 |
|
2024-12-07 |
|
| 423-673
| 0 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-12-18 |
|
| 423-673
| 1 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-12-18 |
|
| 423-673
| 2 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-12-18 |
|
| 423-673
| 3 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-12-18 |
|
| 423-673
| 4 |
Johnson City |
TN |
JHCYTNXCYZZ |
829J PAETEC ITEL, LLC |
956 |
|
2021-05-28 |
|
| 423-673
| 5 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-12-18 |
|
| 423-673
| 6 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-10-23 |
|
| 423-673
| 7 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-10-23 |
|
| 423-673
| 8 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-10-23 |
|
| 423-673
| 9 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-09-05 |
|
| 423-674
| A |
Dayton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
|
|
| 423-674
| 1 |
Dayton |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2023-06-17 |
|
| 423-674
| 2 |
Dayton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2022-09-29 |
|
| 423-674
| 3 |
Dayton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2022-09-29 |
|
| 423-674
| 4 |
Dayton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2021-06-14 |
|
| 423-674
| 5 |
Dayton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2021-06-14 |
|
| 423-674
| 7 |
Dayton |
TN |
|
883K AHOI LLC |
472 |
|
2026-10-29 |
|
| 423-674
| 8 |
Dayton |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2023-09-09 |
|
| 423-675
| A |
Jasper |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
|
|
| 423-675
| 0 |
Jasper |
TN |
CHTGTN12X2Y |
939H COMMIO, LLC |
472 |
|
2023-10-25 |
|
| 423-675
| 1 |
Jasper |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2021-12-09 |
|
| 423-675
| 2 |
Jasper |
TN |
CHTGTN12X2Y |
939H COMMIO, LLC |
472 |
|
2023-09-28 |
|
| 423-675
| 3 |
Jasper |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2021-07-11 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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