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 |
| 423-557
| 2 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2009-05-15 |
|
| 423-557
| 3 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2008-01-26 |
|
| 423-557
| 4 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2008-03-02 |
|
| 423-557
| 5 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2008-05-04 |
|
| 423-557
| 6 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2008-06-06 |
|
| 423-557
| 7 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2009-01-02 |
|
| 423-557
| 8 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2008-11-02 |
|
| 423-557
| 9 |
Johnson City |
TN |
JHCYTNXCX2Y |
8645 SUNCOM DBA T-MOBILE USA |
956 |
|
2004-11-26 |
|
| 423-558
| A |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
|
|
| 423-558
| 0 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2007-03-17 |
|
| 423-558
| 1 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2020-03-07 |
|
| 423-558
| 2 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2018-06-11 |
|
| 423-558
| 3 |
Chattanooga |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2019-05-24 |
|
| 423-558
| 4 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2020-03-07 |
|
| 423-558
| 5 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2021-11-12 |
|
| 423-558
| 6 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2020-03-07 |
|
| 423-558
| 7 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2020-03-07 |
|
| 423-558
| 8 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2021-11-12 |
|
| 423-558
| 9 |
Chattanooga |
TN |
CHTGTNGZ4MD |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
472 |
|
2020-03-07 |
|
| 423-559
| A |
Cleveland |
TN |
CLEVTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-560
| A |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
|
|
| 423-560
| 0 |
Erwin |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2020-03-16 |
|
| 423-560
| 1 |
Erwin |
TN |
JHCYTNXCXAY |
073H TELNYX LLC |
956 |
|
2021-01-23 |
|
| 423-560
| 2 |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-07-10 |
|
| 423-560
| 3 |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-07-10 |
|
| 423-560
| 4 |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-02-17 |
|
| 423-560
| 5 |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-02-17 |
|
| 423-560
| 6 |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-09-21 |
|
| 423-560
| 7 |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-09-21 |
|
| 423-560
| 8 |
Erwin |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2022-09-29 |
|
| 423-560
| 9 |
Erwin |
TN |
JHCYTNXCXRX |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
956 |
|
2021-05-05 |
|
| 423-561
| A |
Sweetwater |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2024-01-15 |
|
| 423-561
| 0 |
Sweetwater |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2014-09-22 |
|
| 423-561
| 1 |
Sweetwater |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2016-07-23 |
|
| 423-561
| 2 |
Sweetwater |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2016-03-28 |
|
| 423-561
| 3 |
Sweetwater |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2016-03-28 |
|
| 423-561
| 5 |
Sweetwater |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2016-12-01 |
|
| 423-561
| 6 |
Sweetwater |
TN |
KNVLTNMA54Z |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
474 |
|
2015-04-27 |
|
| 423-561
| 7 |
Sweetwater |
TN |
KNVNTNEC8MD |
490J BOOST SUBSCRIBERCO L.L.C. |
474 |
|
2024-03-22 |
|
| 423-561
| 8 |
Sweetwater |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2016-06-09 |
|
| 423-561
| 9 |
Sweetwater |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2016-06-09 |
|
| 423-562
| A |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| A |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| 0 |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| 1 |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| 2 |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| 3 |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| 4 |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| 5 |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-563
| 6 |
La Follette |
TN |
LFLTTNMADS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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