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 |
| 423-654
| 0 |
Chattanooga |
TN |
CHTGTN12X5Y |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
472 |
|
2022-12-29 |
|
| 423-654
| 1 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2021-11-12 |
|
| 423-654
| 2 |
Chattanooga |
TN |
CHTGTNNSY0X |
425J CSC WIRELESS, LLC |
472 |
|
2020-09-11 |
|
| 423-654
| 3 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2020-12-17 |
|
| 423-654
| 4 |
Chattanooga |
TN |
|
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2021-07-17 |
|
| 423-654
| 5 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2021-11-12 |
|
| 423-654
| 6 |
Chattanooga |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2021-11-12 |
|
| 423-654
| 7 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2020-12-17 |
|
| 423-654
| 8 |
Chattanooga |
TN |
|
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2021-07-17 |
|
| 423-654
| 9 |
Chattanooga |
TN |
|
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2021-07-17 |
|
| 423-655
| A |
Chattanooga |
TN |
CHTGTNMAXTX |
6630 SPOK, INC. |
472 |
|
|
|
| 423-656
| A |
Johnson City |
TN |
JHCYTNXCY0X |
425J CSC WIRELESS, LLC |
956 |
|
|
|
| 423-656
| 0 |
Johnson City |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2023-02-23 |
|
| 423-656
| 1 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2021-01-22 |
|
| 423-656
| 2 |
Johnson City |
TN |
JHCYTNXCY0X |
425J CSC WIRELESS, LLC |
956 |
|
2020-09-21 |
|
| 423-656
| 3 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-656
| 4 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-656
| 5 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-656
| 6 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-656
| 7 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2021-05-17 |
|
| 423-656
| 8 |
Johnson City |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2024-08-05 |
|
| 423-656
| 9 |
Johnson City |
TN |
JHCYTNXCXRY |
478J NUSO, LLC |
956 |
|
2023-12-30 |
|
| 423-657
| A |
Mosheim |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
|
|
| 423-657
| 0 |
Mosheim |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2015-03-28 |
|
| 423-657
| 1 |
Mosheim |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2018-08-20 |
|
| 423-657
| 2 |
Mosheim |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-06-09 |
|
| 423-657
| 3 |
Mosheim |
TN |
JHCYTNXCXAY |
073H TELNYX LLC |
956 |
|
2021-01-23 |
|
| 423-657
| 4 |
Mosheim |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2023-01-07 |
|
| 423-657
| 5 |
Mosheim |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-07-10 |
|
| 423-657
| 6 |
Mosheim |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-02-17 |
|
| 423-657
| 7 |
Mosheim |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2021-02-17 |
|
| 423-657
| 8 |
Mosheim |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-06-23 |
|
| 423-657
| 9 |
Mosheim |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-06-23 |
|
| 423-658
| A |
Whitwell |
TN |
WHWLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-658
| 0 |
Whitwell |
TN |
WHWLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-658
| 1 |
Whitwell |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2004-11-15 |
|
| 423-658
| 2 |
Whitwell |
TN |
WHWLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-658
| 3 |
Whitwell |
TN |
CHTGTNNSXKY |
525E ONVOY, LLC - TN |
472 |
|
2019-04-27 |
|
| 423-658
| 4 |
Whitwell |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2019-11-24 |
|
| 423-658
| 5 |
Whitwell |
TN |
WHWLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-658
| 6 |
Whitwell |
TN |
WHWLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-658
| 7 |
Whitwell |
TN |
WHWLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-658
| 8 |
Whitwell |
TN |
CLEVTNDL1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
472 |
|
2006-09-11 |
|
| 423-658
| 9 |
Whitwell |
TN |
WHWLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-659
| A |
Copper Basin |
TN |
CHTGTNNSXEY |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
472 |
|
|
|
| 423-659
| 0 |
Copper Basin |
TN |
CHTGTNNSXJZ |
073H TELNYX LLC |
472 |
|
2021-01-17 |
|
| 423-659
| 1 |
Copper Basin |
TN |
CHTGTNNSXMZ |
624H ONVOY SPECTRUM, LLC |
472 |
|
2023-06-17 |
|
| 423-659
| 2 |
Copper Basin |
TN |
CLEVTNDL1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
472 |
|
2026-02-22 |
|
| 423-659
| 6 |
Copper Basin |
TN |
CHTGTNNSXEY |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
472 |
|
2020-09-07 |
|
| 423-659
| 7 |
Copper Basin |
TN |
|
883K AHOI LLC |
472 |
|
2026-09-18 |
|
<< 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: Callcentric - VoIP Internet phone service
Like this site? We accept donations via PayPal.