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 |
| 423-730
| 8 |
Riceville |
TN |
KNVLTNMAYBX |
204G TWIN LAKES COMMUNICATIONS, INC. - TN |
474 |
|
2022-12-30 |
|
| 423-730
| 9 |
Riceville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2023-09-18 |
|
| 423-731
| A |
New Tazewell |
TN |
MRTWTN281MD |
792K CHARTER IP ENABLED SERVICES, LLC |
474 |
|
2026-01-25 |
|
| 423-731
| 1 |
New Tazewell |
TN |
MRTWTN281MD |
792K CHARTER IP ENABLED SERVICES, LLC |
474 |
|
2026-01-25 |
|
| 423-732
| A |
Kingsport |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
|
|
| 423-732
| 0 |
Kingsport |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2015-10-10 |
|
| 423-732
| 1 |
Kingsport |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2017-01-07 |
|
| 423-732
| 2 |
Kingsport |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2016-04-03 |
|
| 423-732
| 3 |
Kingsport |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2019-06-07 |
|
| 423-732
| 4 |
Kingsport |
TN |
JHCYTNXCX2Y |
5562 METROPCS, INC. |
956 |
|
2020-04-02 |
|
| 423-732
| 5 |
Kingsport |
TN |
JHCYTNXCX2Y |
5562 METROPCS, INC. |
956 |
|
2021-01-29 |
|
| 423-732
| 6 |
Kingsport |
TN |
JHCYTNXCXRX |
114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN |
956 |
|
2018-02-08 |
|
| 423-732
| 7 |
Kingsport |
TN |
BUVLTNAX0MD |
792K CHARTER IP ENABLED SERVICES, LLC |
956 |
|
2016-07-01 |
|
| 423-732
| 8 |
Kingsport |
TN |
JHCYTNXCXAY |
073H TELNYX LLC |
956 |
|
2021-01-23 |
|
| 423-732
| 9 |
Kingsport |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2015-10-10 |
|
| 423-733
| A |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 0 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 1 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 2 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 3 |
Sneedville |
TN |
|
145J TERRA NOVA TELECOM INC. |
474 |
|
2023-08-10 |
|
| 423-733
| 4 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 5 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 6 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 8 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-733
| 9 |
Sneedville |
TN |
SNVLTNMARS0 |
9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL |
474 |
|
|
|
| 423-734
| A |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
|
|
| 423-734
| 0 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-07-02 |
|
| 423-734
| 1 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-07-02 |
|
| 423-734
| 2 |
Rogersville |
TN |
KNVLTNMA96Z |
5562 METROPCS, INC. |
474 |
|
2021-05-07 |
|
| 423-734
| 3 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2020-03-12 |
|
| 423-734
| 4 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2020-03-12 |
|
| 423-734
| 5 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-03-12 |
|
| 423-734
| 6 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-03-12 |
|
| 423-734
| 7 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-03-12 |
|
| 423-734
| 8 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-03-12 |
|
| 423-734
| 9 |
Rogersville |
TN |
KNVLTNMA49Z |
525E ONVOY, LLC - TN |
474 |
|
2021-07-02 |
|
| 423-735
| A |
Erwin |
TN |
ERWNTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-735
| 0 |
Erwin |
TN |
ERWNTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-735
| 1 |
Erwin |
TN |
ERWNTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-735
| 2 |
Erwin |
TN |
JHCYTNXCYZZ |
829J PAETEC ITEL, LLC |
956 |
|
2010-02-06 |
|
| 423-735
| 3 |
Erwin |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2011-07-04 |
|
| 423-735
| 4 |
Erwin |
TN |
ERWNTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-735
| 5 |
Erwin |
TN |
ERWNTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-735
| 6 |
Erwin |
TN |
JHCYTNXCX3X |
7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN |
956 |
|
2012-01-20 |
|
| 423-735
| 7 |
Erwin |
TN |
ERWNTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-735
| 8 |
Erwin |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2010-02-05 |
|
| 423-735
| 9 |
Erwin |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2009-07-20 |
|
| 423-736
| A |
Morristown |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
| 423-736
| 0 |
Morristown |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
| 423-736
| 1 |
Morristown |
TN |
KNVLTNIIAMD |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
474 |
|
|
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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