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 |
| 423-518
| 8 |
Elizabethton |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2024-04-17 |
|
| 423-518
| 9 |
Elizabethton |
TN |
JHCYTNXCX2Y |
8645 SUNCOM DBA T-MOBILE USA |
956 |
|
2012-07-23 |
|
| 423-519
| A |
Tellico Plains |
TN |
KNVLTNMA31Z |
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 0 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 1 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 2 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 3 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 4 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 5 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 6 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 7 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 8 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-519
| 9 |
Tellico Plains |
TN |
|
6278 UNITED STATES CELLULAR - TN |
474 |
|
|
|
| 423-520
| A |
Madisonville |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
2024-12-05 |
|
| 423-520
| 0 |
Madisonville |
TN |
|
145J TERRA NOVA TELECOM INC. |
474 |
|
2023-08-10 |
|
| 423-520
| 1 |
Madisonville |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-520
| 2 |
Madisonville |
TN |
KNVLTNWHX6X |
7476 POWERTEL NASHVILLE LICENSES, INC. |
474 |
|
2024-03-24 |
|
| 423-520
| 4 |
Madisonville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2018-04-02 |
|
| 423-520
| 6 |
Madisonville |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2008-11-28 |
|
| 423-520
| 7 |
Madisonville |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2017-06-03 |
|
| 423-520
| 8 |
Madisonville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2022-12-31 |
|
| 423-521
| A |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
|
|
| 423-521
| 0 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2008-11-28 |
|
| 423-521
| 1 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2010-11-19 |
|
| 423-521
| 2 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2010-11-19 |
|
| 423-521
| 3 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2010-02-23 |
|
| 423-521
| 4 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2010-04-12 |
|
| 423-521
| 5 |
Chattanooga |
TN |
CHTGTNNSXFY |
124F BANDWIDTH.COM CLEC, LLC - TN |
472 |
|
2010-03-08 |
|
| 423-521
| 6 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2010-04-12 |
|
| 423-521
| 7 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2011-07-08 |
|
| 423-521
| 8 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2011-07-08 |
|
| 423-521
| 9 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2008-08-16 |
|
| 423-522
| A |
Morristown |
TN |
MRTWTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-522
| 0 |
Morristown |
TN |
KNVLTNMAY8X |
624H ONVOY SPECTRUM, LLC |
474 |
|
2023-06-17 |
|
| 423-522
| 1 |
Morristown |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2023-09-09 |
|
| 423-522
| 2 |
Morristown |
TN |
MRTWTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-522
| 3 |
Morristown |
TN |
MRTWTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-522
| 5 |
Morristown |
TN |
MRTWTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-522
| 6 |
Morristown |
TN |
MRTWTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-522
| 7 |
Morristown |
TN |
MRTWTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-522
| 8 |
Morristown |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2023-09-09 |
|
| 423-522
| 9 |
Morristown |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2023-09-09 |
|
| 423-523
| A |
Bulls Gap |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
| 423-523
| 0 |
Bulls Gap |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2016-08-26 |
|
| 423-523
| 1 |
Bulls Gap |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
| 423-523
| 2 |
Bulls Gap |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
| 423-523
| 3 |
Bulls Gap |
TN |
KNVNTNEC5MD |
145J TERRA NOVA TELECOM INC. |
474 |
|
2024-02-10 |
|
| 423-523
| 4 |
Bulls Gap |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
| 423-523
| 5 |
Bulls Gap |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2003-03-11 |
|
| 423-523
| 6 |
Bulls Gap |
TN |
|
145J TERRA NOVA TELECOM INC. |
474 |
|
2021-09-26 |
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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