National Phone Number Registry NPNR

Area Code 423 Location

Area code 423 is currently assigned for use in Tennessee since Sep 11, 1995. This area code originated from the 615 area code previously by means of area code split or overlay. View all phone prefixes used in area code 423 or other area codes in Tennessee.

(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: 06/24/2017
423-250 in CLEVELAND, TN
TWIN LAKES COMMUNICATIONS, INC. - TN
Effective: 07/02/2017
423-403 in SO PITTSBG, TN
BANDWIDTH.COM CLEC, LLC - TN
Effective: 06/08/2017
423-769 in GREENEVILLE, TN
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN
Effective: 06/10/2017
423-831 in NEWPORT, TN
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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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