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Updated Jan 02, 2010Area Code 423
  1. "E" is Eastern Time Zone, "C" is Central Time Zone, "M" is Mountain Time Zone, and "P" is Pacific Time Zone. Occasionally, an area code will fall in more than one time zone. In this case, the abbreviation is a combination of the previous abbreviations. Some area codes are shown with time zones referencing Universal Coordinated Time (UTC).
  2. Additional technical status can be retrived from the North American Numbering Plan Administration on the 423 area code specific link here.
Area Code423 (area code map)
LocationTennessee
Dates and historical informationArea code 423 went live into service on September 11, 1995.  It was formed as a subdivision of the 615 area code.
Technical Status 2Area code 423 is currently live and in service.
Time Zone(s) 1EC
LATA numbers served474, 956, 472, 466
Number of rate centers served75
List of rate centersMORRISTOWN, LAFOLLETTE, JOHNSON CY, CHATTNOOGA, TELLICO PL, BLOUNTVL, ELIZABTHTN, ENGLEWOOD, ONEIDA, BENTON, BRISTOL, COPPERBSIN, ERWIN, KINGSPORT, SO PITTSBG, BAILEYTON, BULLS GAP, APISON, NEWPORT, OOLTEWAH, MIDWAY SUL, SODDYDAISY, CLEVELAND, FORK RIDGE, ATHENS, CHURCHHILL, LIMESTONE, NEWTAZWELL, COKERCREEK, ETOWAH, ROGERSVL, GREENEVL, DAYTON, MOUNTAINCY, FALLBRANCH, BALL PLAY, SNEEDVILLE, HUNTSVILLE, PETROS, DECATUR, CHARLESTON, SWEETWATER, SURGOINSVL, WARTBURG, SULIVNGDNS, SPRINGCITY, OAKDALE, BLUFF CITY, COLLEGEDL, MADISONVL, JELLICO, MOSHEIM, CUMBERLDGP, PIKEVILLE, RICEVILLE, STONEY CRK, GEORGETOWN, NINE MILE, COLLEGESTA, KNOXVILLE, NIOTA, ROBBINS, SUNBRIGHT, BUTLER, WHITWELL, HAMPTON, SHADY VLY, JONESBORO, ROAN MT, VONORE, FLCRKFALLS, JASPER, CLINCHPORT, DUNLAP, DEER LODGE
Number of major cities served102
Names of major cities served (ZIP code)Morristown (37814), La Follette (37766), Morley (37766), Lafollette (37766), Johnson City (37601), Jc (37601), (00000), Johnson City (37604), Jc (37604), Kingsport (37663), Colonial Heights (37663), Colonial Hgts (37663), Chattanooga (37408), Chattanooga (37403), Tellico Plains (37385), Tellico Plns (37385), Blountville (37617), Elizabethton (37643), Englewood (37329), Oneida (37841), Benton (37307), Bristol (37620), Copperhill (37317), Postelle (37317), Erwin (37650), Kingsport (37660), Bloomingdale (37660), South Pittsburg (37380), S Pittsburg (37380), New Hope (37380), Orme (37380), Greeneville (37743), Tusculum Coll (37743), Baileyton (37743), Bulls Gap (37711), Apison (37302), Newport (37821), Ooltewah (37363), College Dale (37363), Cleveland (37311), Cleveld (37311), Middlesboro (40965), Middlesborough (40965), Athens (37303), Church Hill (37642), Limestone (37681), New Tazewell (37825), Coker Creek (37314), Etowah (37331), Rogersville (37857), Greeneville (37745), Baileyton (37745), Tusculum (37745), Dayton (37321), Mountain City (37683), Fall Branch (37656), Chattanooga (37421), Sneedville (37869), Huntsville (37756), Norma (37756), Petros (37845), Harrison (37341), Decatur (37322), Charleston (37310), Sweetwater (37874), Surgoinsville (37873), Townsend (37882), Jasper (37347), Kimball (37347), (37856), Spring City (37381), Watts Bar Dam (37381), Oakdale (37829), Jellico (37762), Madisonville (37354), Bluff City (37618), Collegedale (37315), Mosheim (37818), Pikeville (37367), Riceville (37370), Chattanooga (37409), Hartford (37753), Harrogate (37752), Chattanooga (37404), Signal Mountain (37377), Signal Mtn (37377), Walden (37377), Knoxville (37917), Niota (37826), Robbins (37852), Glen Mary (37852), Sunbright (37872), Burrville (37872), Butler (37640), Whitwell (37397), Powells Crossroads (37397), Powells Crsrd (37397), Hampton (37658), El Paso (79901), Shady Valley (37688), Jonesborough (37659), Jonesboro (37659), Roan Mountain (37687), Vonore (37885), Rossville (30741), Rutledge (37861), Chattanooga (37412), East Ridge (37412), Rossville (38066), Williston (38066), Chattanooga (37415), Red Bank (37415), Duffield (24244), Clinchport (24244), Dunlap (37327), Deer Lodge (37726)
Number of exchanges served547
List of exchanges served423-200-xxxx, 423-201-xxxx, 423-202-xxxx, 423-206-xxxx, 423-208-xxxx, 423-209-xxxx, 423-210-xxxx, 423-212-xxxx, 423-213-xxxx, 423-214-xxxx, 423-215-xxxx, 423-216-xxxx, 423-217-xxxx, 423-218-xxxx, 423-219-xxxx, 423-220-xxxx, 423-221-xxxx, 423-222-xxxx, 423-223-xxxx, 423-224-xxxx, 423-225-xxxx, 423-227-xxxx, 423-228-xxxx, 423-229-xxxx, 423-230-xxxx, 423-231-xxxx, 423-232-xxxx, 423-233-xxxx, 423-234-xxxx, 423-235-xxxx, 423-236-xxxx, 423-237-xxxx, 423-238-xxxx, 423-239-xxxx, 423-240-xxxx, 423-241-xxxx, 423-242-xxxx, 423-243-xxxx, 423-244-xxxx, 423-245-xxxx, 423-246-xxxx, 423-247-xxxx, 423-248-xxxx, 423-249-xxxx, 423-252-xxxx, 423-253-xxxx, 423-254-xxxx, 423-255-xxxx, 423-256-xxxx, 423-257-xxxx, 423-258-xxxx, 423-259-xxxx, 423-260-xxxx, 423-261-xxxx, 423-262-xxxx, 423-263-xxxx, 423-265-xxxx, 423-266-xxxx, 423-267-xxxx, 423-268-xxxx, 423-269-xxxx, 423-272-xxxx, 423-273-xxxx, 423-274-xxxx, 423-275-xxxx, 423-276-xxxx, 423-277-xxxx, 423-278-xxxx, 423-279-xxxx, 423-280-xxxx, 423-282-xxxx, 423-283-xxxx, 423-284-xxxx, 423-285-xxxx, 423-286-xxxx, 423-287-xxxx, 423-288-xxxx, 423-289-xxxx, 423-290-xxxx, 423-291-xxxx, 423-292-xxxx, 423-293-xxxx, 423-294-xxxx, 423-295-xxxx, 423-296-xxxx, 423-297-xxxx, 423-298-xxxx, 423-299-xxxx, 423-300-xxxx, 423-303-xxxx, 423-304-xxxx, 423-305-xxxx, 423-306-xxxx, 423-307-xxxx, 423-308-xxxx, 423-309-xxxx, 423-310-xxxx, 423-312-xxxx, 423-313-xxxx, 423-314-xxxx, 423-315-xxxx, 423-316-xxxx, 423-317-xxxx, 423-318-xxxx, 423-319-xxxx, 423-320-xxxx, 423-321-xxxx, 423-322-xxxx, 423-323-xxxx, 423-324-xxxx, 423-325-xxxx, 423-326-xxxx, 423-327-xxxx, 423-328-xxxx, 423-329-xxxx, 423-330-xxxx, 423-331-xxxx, 423-332-xxxx, 423-333-xxxx, 423-334-xxxx, 423-335-xxxx, 423-336-xxxx, 423-337-xxxx, 423-338-xxxx, 423-339-xxxx, 423-340-xxxx, 423-341-xxxx, 423-342-xxxx, 423-343-xxxx, 423-344-xxxx, 423-345-xxxx, 423-346-xxxx, 423-347-xxxx, 423-348-xxxx, 423-349-xxxx, 423-351-xxxx, 423-352-xxxx, 423-354-xxxx, 423-355-xxxx, 423-356-xxxx, 423-357-xxxx, 423-358-xxxx, 423-359-xxxx, 423-360-xxxx, 423-361-xxxx, 423-362-xxxx, 423-364-xxxx, 423-365-xxxx, 423-366-xxxx, 423-367-xxxx, 423-368-xxxx, 423-369-xxxx, 423-371-xxxx, 423-377-xxxx, 423-378-xxxx, 423-381-xxxx, 423-383-xxxx, 423-384-xxxx, 423-385-xxxx, 423-386-xxxx, 423-387-xxxx, 423-388-xxxx, 423-389-xxxx, 423-390-xxxx, 423-391-xxxx, 423-392-xxxx, 423-393-xxxx, 423-394-xxxx, 423-395-xxxx, 423-396-xxxx, 423-397-xxxx, 423-399-xxxx, 423-400-xxxx, 423-401-xxxx, 423-402-xxxx, 423-404-xxxx, 423-407-xxxx, 423-409-xxxx, 423-410-xxxx, 423-412-xxxx, 423-413-xxxx, 423-414-xxxx, 423-416-xxxx, 423-418-xxxx, 423-419-xxxx, 423-420-xxxx, 423-421-xxxx, 423-422-xxxx, 423-424-xxxx, 423-425-xxxx, 423-426-xxxx, 423-427-xxxx, 423-428-xxxx, 423-429-xxxx, 423-431-xxxx, 423-432-xxxx, 423-433-xxxx, 423-434-xxxx, 423-435-xxxx, 423-436-xxxx, 423-437-xxxx, 423-438-xxxx, 423-439-xxxx, 423-441-xxxx, 423-442-xxxx, 423-443-xxxx, 423-445-xxxx, 423-446-xxxx, 423-447-xxxx, 423-449-xxxx, 423-451-xxxx, 423-452-xxxx, 423-453-xxxx, 423-454-xxxx, 423-455-xxxx, 423-457-xxxx, 423-461-xxxx, 423-462-xxxx, 423-463-xxxx, 423-464-xxxx, 423-465-xxxx, 423-468-xxxx, 423-469-xxxx, 423-470-xxxx, 423-471-xxxx, 423-472-xxxx, 423-473-xxxx, 423-474-xxxx, 423-475-xxxx, 423-476-xxxx, 423-478-xxxx, 423-479-xxxx, 423-482-xxxx, 423-483-xxxx, 423-484-xxxx, 423-485-xxxx, 423-487-xxxx, 423-488-xxxx, 423-489-xxxx, 423-490-xxxx, 423-493-xxxx, 423-494-xxxx, 423-495-xxxx, 423-496-xxxx, 423-499-xxxx, 423-502-xxxx, 423-503-xxxx, 423-504-xxxx, 423-505-xxxx, 423-506-xxxx, 423-507-xxxx, 423-508-xxxx, 423-509-xxxx, 423-510-xxxx, 423-512-xxxx, 423-513-xxxx, 423-514-xxxx, 423-515-xxxx, 423-517-xxxx, 423-519-xxxx, 423-520-xxxx, 423-521-xxxx, 423-522-xxxx, 423-523-xxxx, 423-525-xxxx, 423-526-xxxx, 423-527-xxxx, 423-528-xxxx, 423-529-xxxx, 423-531-xxxx, 423-532-xxxx, 423-533-xxxx, 423-534-xxxx, 423-535-xxxx, 423-536-xxxx, 423-537-xxxx, 423-538-xxxx, 423-539-xxxx, 423-542-xxxx, 423-543-xxxx, 423-544-xxxx, 423-545-xxxx, 423-546-xxxx, 423-547-xxxx, 423-548-xxxx, 423-550-xxxx, 423-552-xxxx, 423-553-xxxx, 423-554-xxxx, 423-555-xxxx, 423-557-xxxx, 423-558-xxxx, 423-559-xxxx, 423-561-xxxx, 423-562-xxxx, 423-563-xxxx, 423-566-xxxx, 423-567-xxxx, 423-568-xxxx, 423-569-xxxx, 423-570-xxxx, 423-571-xxxx, 423-572-xxxx, 423-573-xxxx, 423-574-xxxx, 423-575-xxxx, 423-576-xxxx, 423-578-xxxx, 423-580-xxxx, 423-581-xxxx, 423-582-xxxx, 423-584-xxxx, 423-585-xxxx, 423-586-xxxx, 423-587-xxxx, 423-589-xxxx, 423-591-xxxx, 423-592-xxxx, 423-593-xxxx, 423-595-xxxx, 423-596-xxxx, 423-598-xxxx, 423-600-xxxx, 423-601-xxxx, 423-605-xxxx, 423-606-xxxx, 423-608-xxxx, 423-610-xxxx, 423-612-xxxx, 423-613-xxxx, 423-614-xxxx, 423-615-xxxx, 423-618-xxxx, 423-619-xxxx, 423-620-xxxx, 423-622-xxxx, 423-623-xxxx, 423-624-xxxx, 423-625-xxxx, 423-626-xxxx, 423-627-xxxx, 423-628-xxxx, 423-629-xxxx, 423-631-xxxx, 423-634-xxxx, 423-635-xxxx, 423-636-xxxx, 423-637-xxxx, 423-638-xxxx, 423-639-xxxx, 423-642-xxxx, 423-643-xxxx, 423-645-xxxx, 423-646-xxxx, 423-647-xxxx, 423-648-xxxx, 423-649-xxxx, 423-650-xxxx, 423-652-xxxx, 423-653-xxxx, 423-655-xxxx, 423-658-xxxx, 423-662-xxxx, 423-663-xxxx, 423-664-xxxx, 423-665-xxxx, 423-667-xxxx, 423-668-xxxx, 423-671-xxxx, 423-676-xxxx, 423-677-xxxx, 423-683-xxxx, 423-684-xxxx, 423-685-xxxx, 423-693-xxxx, 423-695-xxxx, 423-697-xxxx, 423-698-xxxx, 423-699-xxxx, 423-702-xxxx, 423-704-xxxx, 423-709-xxxx, 423-710-xxxx, 423-714-xxxx, 423-715-xxxx, 423-716-xxxx, 423-718-xxxx, 423-721-xxxx, 423-722-xxxx, 423-723-xxxx, 423-724-xxxx, 423-725-xxxx, 423-726-xxxx, 423-727-xxxx, 423-728-xxxx, 423-730-xxxx, 423-733-xxxx, 423-735-xxxx, 423-736-xxxx, 423-737-xxxx, 423-739-xxxx, 423-741-xxxx, 423-742-xxxx, 423-743-xxxx, 423-744-xxxx, 423-745-xxxx, 423-746-xxxx, 423-747-xxxx, 423-748-xxxx, 423-751-xxxx, 423-752-xxxx, 423-753-xxxx, 423-754-xxxx, 423-755-xxxx, 423-756-xxxx, 423-757-xxxx, 423-758-xxxx, 423-760-xxxx, 423-761-xxxx, 423-762-xxxx, 423-763-xxxx, 423-764-xxxx, 423-765-xxxx, 423-767-xxxx, 423-768-xxxx, 423-772-xxxx, 423-773-xxxx, 423-774-xxxx, 423-775-xxxx, 423-778-xxxx, 423-779-xxxx, 423-780-xxxx, 423-781-xxxx, 423-782-xxxx, 423-783-xxxx, 423-784-xxxx, 423-785-xxxx, 423-787-xxxx, 423-788-xxxx, 423-789-xxxx, 423-790-xxxx, 423-791-xxxx, 423-792-xxxx, 423-793-xxxx, 423-794-xxxx, 423-795-xxxx, 423-797-xxxx, 423-798-xxxx, 423-799-xxxx, 423-802-xxxx, 423-807-xxxx, 423-808-xxxx, 423-815-xxxx, 423-817-xxxx, 423-819-xxxx, 423-821-xxxx, 423-822-xxxx, 423-823-xxxx, 423-824-xxxx, 423-825-xxxx, 423-826-xxxx, 423-827-xxxx, 423-829-xxxx, 423-833-xxxx, 423-834-xxxx, 423-836-xxxx, 423-837-xxxx, 423-838-xxxx, 423-839-xxxx, 423-842-xxxx, 423-843-xxxx, 423-844-xxxx, 423-845-xxxx, 423-846-xxxx, 423-847-xxxx, 423-851-xxxx, 423-854-xxxx, 423-855-xxxx, 423-857-xxxx, 423-862-xxxx, 423-863-xxxx, 423-867-xxxx, 423-869-xxxx, 423-870-xxxx, 423-871-xxxx, 423-874-xxxx, 423-875-xxxx, 423-876-xxxx, 423-877-xxxx, 423-878-xxxx, 423-881-xxxx, 423-883-xxxx, 423-884-xxxx, 423-885-xxxx, 423-886-xxxx, 423-887-xxxx, 423-892-xxxx, 423-893-xxxx, 423-894-xxxx, 423-895-xxxx, 423-896-xxxx, 423-897-xxxx, 423-899-xxxx, 423-902-xxxx, 423-903-xxxx, 423-907-xxxx, 423-908-xxxx, 423-910-xxxx, 423-912-xxxx, 423-913-xxxx, 423-914-xxxx, 423-915-xxxx, 423-917-xxxx, 423-920-xxxx, 423-921-xxxx, 423-923-xxxx, 423-926-xxxx, 423-928-xxxx, 423-929-xxxx, 423-933-xxxx, 423-938-xxxx, 423-939-xxxx, 423-942-xxxx, 423-943-xxxx, 423-944-xxxx, 423-946-xxxx, 423-948-xxxx, 423-949-xxxx, 423-952-xxxx, 423-953-xxxx, 423-954-xxxx, 423-956-xxxx, 423-957-xxxx, 423-961-xxxx, 423-963-xxxx, 423-965-xxxx, 423-967-xxxx, 423-968-xxxx, 423-972-xxxx, 423-973-xxxx, 423-975-xxxx, 423-979-xxxx, 423-987-xxxx, 423-989-xxxx, 423-990-xxxx, 423-991-xxxx, 423-994-xxxx
Number of telephone companies53 telephone companies servicing the 423 area code
List of telephone companiesLEVEL 3 COMMUNICATIONS, LLC - TN, NEXTEL COMMUNICATIONS, INC., BROOKS FIBER COMMUNICATIONS OF TENNESSEE, INC.-TN, NUVOX COMMUNICATIONS, NEW CINGULAR WIRELESS PCS, LLC - GA, CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN, USA MOBILITY WIRELESS, INC., SPRINT SPECTRUM L.P., BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL, UNITED STATES CELLULAR CORP. - TENNESSEE, SPRINT SPECTRUM L.P.- TN, NETWORK TELEPHONE CORPORATION - TN, US LEC OF TENNESSEE, INC, PAGEPRO CORPORATION, UNITED TELEPHONE - SOUTHEAST - TN, ALEC, INC. - TN, POWERTEL ATLANTA LICENSES, INC., PRO PAGE PARTNERS, LLC, CENTURYTEL OF OOLTEWAH-COLLEGEDALE, INC., TCG AMERICA, INC. - TN, TELLICO TELEPHONE CO., INC., BUSINESS TELECOM INC. - BTI - TN, TCG MIDSOUTH, INC. - TN, VERIZON WIRELESS (VAW), LLC, PAGER ONE OF FLORIDA - TENNESSEE, TELCOVE OPERATIONS, INC. - TN, HIGHLAND TELEPHONE COOPERATIVE, INC. - TN, AT&T LOCAL, SUNCOM DBA T-MOBILE USA, CENTURYTEL ACQ., LLC DBA KMC TELECOM III, LLC - TN, YMAX COMMUNICATIONS CORP. - TN, COMCAST PHONE OF TENNESSEE, LLC - TN, NORLIGHT, INC. - TN, CRICKET COMMUNICATIONS, INC., EAST TENNESSEE NETWORK, LLC - TN, METRO BEEPER SERVICE, INC., CHARTER FIBERLINK-TENNESSEE, LLC - TN, DELTACOM, INC. - TN, POWERTEL NASHVILLE LICENSES, INC., BLEDSOE TELEPHONE COOPERATIVE, COVISTA, INC. - TN, ALLTEL COMMUNICATIONS, INC. - TN, NEUTRAL TANDEM-TENNESSEE, LLC - TN, CENTURYTEL OF CLAIRBORNE, INC., CELLULAR PAGE, ETC COMMUNICATIONS, LLC - TN, BRISTOL TENNESSEE ESSENTIAL SERVICES - TN, ELECTRIC POWER BOARD OF CHATTANOOGA, NA COMMUNICATIONS, INC., CENTURYTEL SOLUTIONS, LLC - TN, BANDWIDTH.COM CLEC, LLC - TN, SKYLINE TELEPHONE MEMBERSHIP CORP., SCOTT COUNTY TELEPHONE COOPERATIVE, INC.

423 Area Code Map

 
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