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 |
| 423-423
| 3 |
Limestone |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2026-01-23 |
|
| 423-423
| 4 |
Limestone |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2026-01-23 |
|
| 423-423
| 7 |
Limestone |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2026-01-23 |
|
| 423-423
| 9 |
Limestone |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2026-01-23 |
|
| 423-424
| A |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
2024-12-05 |
|
| 423-424
| 0 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
| 423-424
| 1 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
| 423-424
| 2 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
| 423-424
| 3 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
| 423-424
| 4 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
| 423-424
| 5 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
| 423-424
| 6 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2005-03-17 |
|
| 423-424
| 7 |
Chattanooga |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
| 423-424
| 8 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2006-12-17 |
|
| 423-424
| 9 |
Chattanooga |
TN |
CHTGTNNSXCZ |
7473 POWERTEL ATLANTA LICENSES, INC. |
472 |
|
2006-10-29 |
|
| 423-425
| A |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 0 |
Chattanooga |
TN |
|
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 1 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 2 |
Chattanooga |
TN |
CHTITNCDDS0 |
4645 ELECTRIC POWER BOARD OF CHATTANOOGA |
472 |
|
2009-03-12 |
|
| 423-425
| 3 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 4 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 5 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 6 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 7 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 8 |
Chattanooga |
TN |
CHTGTNNSDS1 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
472 |
|
|
|
| 423-425
| 9 |
Chattanooga |
TN |
CHTGTNNSX8X |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
472 |
|
2014-04-14 |
|
| 423-426
| A |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
|
|
| 423-426
| 0 |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2008-09-12 |
|
| 423-426
| 1 |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2003-05-05 |
|
| 423-426
| 2 |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2003-05-05 |
|
| 423-426
| 3 |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2003-05-05 |
|
| 423-426
| 4 |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2004-01-13 |
|
| 423-426
| 5 |
Limestone |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2006-02-11 |
|
| 423-426
| 6 |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2004-12-10 |
|
| 423-426
| 7 |
Limestone |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2006-10-09 |
|
| 423-426
| 8 |
Limestone |
TN |
JHCYTNXCXHY |
318J COMCAST IP PHONE, LLC |
956 |
|
2008-04-05 |
|
| 423-426
| 9 |
Limestone |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2008-06-18 |
|
| 423-427
| A |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
|
|
| 423-427
| 0 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2019-11-17 |
|
| 423-427
| 1 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2019-11-17 |
|
| 423-427
| 2 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-03-05 |
|
| 423-427
| 3 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-03-05 |
|
| 423-427
| 4 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-05-04 |
|
| 423-427
| 5 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2019-04-29 |
|
| 423-427
| 6 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-09-13 |
|
| 423-427
| 7 |
Johnson City |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2018-09-13 |
|
| 423-427
| 8 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2020-01-05 |
|
| 423-427
| 9 |
Johnson City |
TN |
JHCYTNXCXYX |
6214 NEW CINGULAR WIRELESS PCS, LLC - GA |
956 |
|
2020-01-05 |
|
| 423-428
| A |
Dayton |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
2024-12-05 |
|
| 423-428
| 0 |
Dayton |
TN |
CHTGTNNS04Z |
829J PAETEC ITEL, LLC |
472 |
|
|
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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