National Phone Number Registry NPNR

(423)
Enter 7-digit phone number for area code 423 or the complete 10-digit phone number

Phone Prefixes for Area Code 423

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Area code Location Company / Service Provider
423-200 MORRISTOWN, TN LEVEL 3 COMMUNICATIONS, LLC - TN
423-201 LAFOLLETTE, TN LEVEL 3 COMMUNICATIONS, LLC - TN
423-202 Johnson City, TN BROOKS FIBER COMMUNICATIONS OF TENNESSEE, INC.- TN
423-205 ETOWAH, TN NEUTRAL TANDEM-TENNESSEE, LLC - TN
423-206 MORRISTOWN, TN USA MOBILITY WIRELESS, INC.
423-207 MIDWAY, TN LEVEL 3 COMMUNICATIONS, LLC - TN
423-208 Chattanooga, TN NEW CINGULAR WIRELESS PCS, LLC - GA
423-209 Chattanooga, TN BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
423-210 TELLICO PL, TN UNITED STATES CELLULAR CORP. - TENNESSEE
423-212 Blountville, TN LEVEL 3 COMMUNICATIONS, LLC - TN
423-213 Elizabethton, TN SPRINT SPECTRUM L.P.
423-214 ENGLEWOOD, TN UNITED STATES CELLULAR CORP. - TENNESSEE
423-215 ONEIDA, TN CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN
423-216 BENTON, TN NETWORK TELEPHONE CORPORATION - TN
423-217 BRISTOL, TN LEVEL 3 COMMUNICATIONS, LLC - TN
423-218 Johnson City, TN LEVEL 3 COMMUNICATIONS, LLC - TN
423-219 COPPERBSIN, TN NETWORK TELEPHONE CORPORATION - TN
423-220 ERWIN, TN US LEC OF TENNESSEE, INC
423-221 Chattanooga, TN USA MOBILITY WIRELESS, INC.
423-222 MORRISTOWN, TN PAGEPRO CORPORATION
423-223 ONEIDA, TN NEW CINGULAR WIRELESS PCS, LLC - GA
423-224 KINGSPORT, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-225 BENTON, TN ALEC, LLC - TN
423-226 CHURCHHILL, TN BANDWIDTH.COM CLEC, LLC - TN
423-227 Chattanooga, TN POWERTEL ATLANTA LICENSES, INC.
423-228 SO PITTSBG, TN US LEC OF TENNESSEE, INC
423-229 KINGSPORT, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-230 KINGSPORT, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-231 MORRISTOWN, TN NEW CINGULAR WIRELESS PCS, LLC - GA
423-232 Johnson City, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-233 Johnson City, TN PRO PAGE PARTNERS, LLC
423-234 BAILEYTON, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-235 BULLS GAP, TN BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
423-236 APISON, TN CENTURYTEL OOLTEWAH-COLLEGEDALE DBA CENTURYLINK
423-237 NEWPORT, TN NEW CINGULAR WIRELESS PCS, LLC - GA
423-238 OOLTEWAH, TN CENTURYTEL OOLTEWAH-COLLEGEDALE DBA CENTURYLINK
423-239 MIDWAY SUL, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-240 Chattanooga, TN CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN
423-241 COPPERBSIN, TN CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN
423-242 Chattanooga, TN TCG MIDSOUTH, INC. - TN
423-243 SODDYDAISY, TN TCG MIDSOUTH, INC. - TN
423-244 CLEVELAND, TN TCG MIDSOUTH, INC. - TN
423-245 KINGSPORT, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-246 KINGSPORT, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-247 KINGSPORT, TN UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
423-248 NEWPORT, TN UNITED STATES CELLULAR CORP. - TENNESSEE
423-249 FORK RIDGE, TN BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
423-250 CLEVELAND, TN TWIN LAKES COMMUNICATIONS, INC. - TN
423-251 KINGSPORT, TN METRO PCS, INC.
423-252 ATHENS, TN US LEC OF TENNESSEE, INC
New numbers being added to 423 area code
Effective: 09/04/2017
423-397 in BENTON, TN
BANDWIDTH.COM CLEC, LLC - TN
Effective: 07/02/2017
423-403 in SO PITTSBG, TN
BANDWIDTH.COM CLEC, LLC - TN
423 Area Code Information
Type of code: General Purpose Code
Location: TN - US
Time zone: EC
Assigned for use: Yes
Code in service: Yes
Service date: September 11, 1995
In jeopardy: No
Relief in progress: No
NPA Relief status:
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s): IL94/11-018
Overlay code: No
Overlay complex:
Dialing plan Standard Permissive
Home local calls: 7D NA
Foreign local calls: 10D NA
Home toll calls: 1+10D NA
Foreign toll calls: 1+10D -

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