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 |
| 423-388
| 1 |
Erwin |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2007-03-11 |
|
| 423-388
| 2 |
Erwin |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2010-09-25 |
|
| 423-388
| 3 |
Erwin |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2011-01-30 |
|
| 423-388
| 4 |
Erwin |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2005-01-30 |
|
| 423-388
| 5 |
Erwin |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2009-07-10 |
|
| 423-388
| 6 |
Erwin |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2018-08-25 |
|
| 423-388
| 7 |
Erwin |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2016-08-22 |
|
| 423-388
| 8 |
Erwin |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2003-08-18 |
|
| 423-388
| 9 |
Erwin |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
2003-08-18 |
|
| 423-389
| A |
Midway (Sullivan) |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
|
|
| 423-389
| 0 |
Midway (Sullivan) |
TN |
JHCYTNXCXPX |
525E ONVOY, LLC - TN |
956 |
|
2019-01-11 |
|
| 423-389
| 1 |
Midway (Sullivan) |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
|
|
| 423-389
| 2 |
Midway (Sullivan) |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2024-03-05 |
|
| 423-389
| 3 |
Midway (Sullivan) |
TN |
|
145J TERRA NOVA TELECOM INC. |
956 |
|
2025-10-06 |
|
| 423-389
| 4 |
Midway (Sullivan) |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2014-07-17 |
|
| 423-389
| 6 |
Midway (Sullivan) |
TN |
JHCYTNXCXIY |
6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN |
956 |
|
|
|
| 423-389
| 7 |
Midway (Sullivan) |
TN |
GTCYVA02AMD |
008A MOUNTAINET TELEPHONE COMPANY - TN |
956 |
|
2004-10-01 |
|
| 423-389
| 8 |
Midway (Sullivan) |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2005-09-29 |
|
| 423-389
| 9 |
Midway (Sullivan) |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2003-02-04 |
|
| 423-390
| A |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-390
| 0 |
Kingsport |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2014-07-17 |
|
| 423-390
| 1 |
Kingsport |
TN |
BUVLTNAX0MD |
792K CHARTER IP ENABLED SERVICES, LLC |
956 |
|
2014-02-11 |
|
| 423-390
| 2 |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-390
| 3 |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-390
| 4 |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-390
| 5 |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-390
| 6 |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-390
| 7 |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-390
| 8 |
Kingsport |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2013-05-02 |
|
| 423-390
| 9 |
Kingsport |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2015-06-14 |
|
| 423-391
| A |
Bluff City |
TN |
BLCYTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-391
| 0 |
Bluff City |
TN |
BLCYTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-391
| 1 |
Bluff City |
TN |
BLCYTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-391
| 2 |
Bluff City |
TN |
JHCYTNXCXPY |
624H ONVOY SPECTRUM, LLC |
956 |
|
2024-03-05 |
|
| 423-391
| 3 |
Bluff City |
TN |
BLCYTNXARS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
2006-11-27 |
|
| 423-391
| 4 |
Bluff City |
TN |
JHCYTNXCX3X |
7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN |
956 |
|
2009-05-12 |
|
| 423-391
| 5 |
Bluff City |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2010-06-19 |
|
| 423-391
| 6 |
Bluff City |
TN |
JHCYTNXCXNX |
124F BANDWIDTH.COM CLEC, LLC - TN |
956 |
|
2010-10-08 |
|
| 423-391
| 7 |
Bluff City |
TN |
BUVLTNAX0MD |
792K CHARTER IP ENABLED SERVICES, LLC |
956 |
|
2005-01-23 |
|
| 423-391
| 8 |
Bluff City |
TN |
BUVLTNAX0MD |
792K CHARTER IP ENABLED SERVICES, LLC |
956 |
|
2011-10-23 |
|
| 423-391
| 9 |
Bluff City |
TN |
JHCYTNXC9MD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
956 |
|
2013-03-03 |
|
| 423-392
| A |
Kingsport |
TN |
KGPTTNXADS0 |
4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN |
956 |
|
|
|
| 423-393
| A |
Bulls Gap |
TN |
MRTWTN281MD |
792K CHARTER IP ENABLED SERVICES, LLC |
474 |
|
2025-01-23 |
|
| 423-393
| 1 |
Bulls Gap |
TN |
MRTWTN281MD |
792K CHARTER IP ENABLED SERVICES, LLC |
474 |
|
2005-05-23 |
|
| 423-393
| 2 |
Bulls Gap |
TN |
KNVLTNMANMD |
4806 LEVEL 3 COMMUNICATIONS, LLC - TN |
474 |
|
2008-05-20 |
|
| 423-393
| 3 |
Bulls Gap |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2010-03-04 |
|
| 423-393
| 4 |
Bulls Gap |
TN |
KNVLTNMAYHX |
318J COMCAST IP PHONE, LLC |
474 |
|
2008-11-21 |
|
| 423-393
| 5 |
Bulls Gap |
TN |
KNVLTNMA84Z |
516C AT&T CORP. |
474 |
|
2011-11-01 |
|
| 423-393
| 6 |
Bulls Gap |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2021-12-09 |
|
| 423-393
| 7 |
Bulls Gap |
TN |
KNVLTNMA56Z |
124F BANDWIDTH.COM CLEC, LLC - TN |
474 |
|
2012-05-31 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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