Local Calling Guide
Area code/prefix search
NPA: 423
[Rate centres in NPA 423]
[Dial plan for NPA 423]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 423-535
| 3 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
2005-02-21 |
|
| 423-535
| 4 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
2005-02-21 |
|
| 423-535
| 5 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
2005-02-21 |
|
| 423-535
| 6 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
2005-02-21 |
|
| 423-535
| 7 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
2005-05-30 |
|
| 423-535
| 8 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
2005-05-23 |
|
| 423-535
| 9 |
Chattanooga |
TN |
CHTGTN12X8X |
7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN |
472 |
|
2003-10-15 |
|
| 423-536
| A |
Sweetwater |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
2024-12-05 |
|
| 423-536
| 0 |
Sweetwater |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-536
| 1 |
Sweetwater |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-536
| 3 |
Sweetwater |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-536
| 4 |
Sweetwater |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-536
| 5 |
Sweetwater |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-536
| 6 |
Sweetwater |
TN |
KNVLTNMANMD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
474 |
|
2004-11-15 |
|
| 423-536
| 7 |
Sweetwater |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2006-06-16 |
|
| 423-536
| 8 |
Sweetwater |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2006-11-16 |
|
| 423-536
| 9 |
Sweetwater |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2008-11-28 |
|
| 423-537
| A |
Bulls Gap |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
2024-12-06 |
|
| 423-537
| 1 |
Bulls Gap |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-537
| 2 |
Bulls Gap |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-537
| 3 |
Bulls Gap |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-537
| 4 |
Bulls Gap |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2018-03-31 |
|
| 423-537
| 5 |
Bulls Gap |
TN |
KNVLTNMAYAY |
829J PAETEC ITEL, LLC |
474 |
|
|
|
| 423-537
| 6 |
Bulls Gap |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2016-03-25 |
|
| 423-537
| 8 |
Bulls Gap |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2016-03-25 |
|
| 423-538
| A |
Bluff City |
TN |
BLCYTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-539
| A |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
|
|
| 423-539
| 0 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2005-04-22 |
|
| 423-539
| 1 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2006-01-31 |
|
| 423-539
| 2 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2006-01-31 |
|
| 423-539
| 3 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
|
|
| 423-539
| 4 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2006-06-26 |
|
| 423-539
| 5 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2006-08-19 |
|
| 423-539
| 6 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2006-10-13 |
|
| 423-539
| 7 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2016-05-12 |
|
| 423-539
| 8 |
Oneida |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
|
|
| 423-539
| 9 |
Oneida |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2014-08-15 |
|
| 423-540
| A |
Newport |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
|
|
| 423-540
| 0 |
Newport |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2018-04-18 |
|
| 423-540
| 1 |
Newport |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2018-04-19 |
|
| 423-540
| 2 |
Newport |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2023-04-08 |
|
| 423-540
| 3 |
Newport |
TN |
KNVLTNJHGT0 |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
474 |
|
2023-04-08 |
|
| 423-540
| 4 |
Newport |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-03-04 |
|
| 423-540
| 5 |
Newport |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2020-12-21 |
|
| 423-540
| 6 |
Newport |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
2020-06-16 |
|
| 423-540
| 7 |
Newport |
TN |
|
114J EXIANT COMMUNICATIONS LLC |
474 |
|
2026-10-16 |
|
| 423-540
| 8 |
Newport |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2022-05-21 |
|
| 423-540
| 9 |
Newport |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-07-30 |
|
| 423-541
| A |
Chattanooga |
TN |
CHTGTNNSXNZ |
197D VONAGE AMERICA LLC |
472 |
|
|
|
| 423-541
| 0 |
Chattanooga |
TN |
CHTGTNNSXNZ |
197D VONAGE AMERICA LLC |
472 |
|
2018-05-11 |
|
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 >>
Last updated: Sat, 10 Oct 2026 15:24:20 UTC
Sponsored by: VoIP Much Phone Company
Like this site? We accept donations via PayPal.