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Area Codes > 815 > Central Office Codes

Exchange Rate Center State Operating Company
815-200 LA SALLE IL PAETEC COMMUNICATIONS, INC. - IL
815-201 ROCKFORD IL METROCALL
815-202 OGLESBY IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-203 JOLIET IL ARCH WIRELESS HOLDINGS, INC.
815-204 CRYSTAL LK IL ARCH WIRELESS HOLDINGS, INC.
815-205 LA GRANGE IL ARCH WIRELESS HOLDINGS, INC.
815-206 WOODSTOCK IL AMERITECH ILLINOIS
815-207 JOLIET IL AT&T LOCAL
815-208 FULTON IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
815-209 ROCKFORD IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-210 JOLIET IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-211 IL
815-212 JOLIET IL T-MOBILE USA, INC.
815-213 STERLING IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-214 KANKAKEE IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-215 NEW LENOX IL GLOBALCOM, INC.-IL
815-216 KANKAKEE IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-217 DE KALB IL DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL
815-218 ROCKFORD IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-219 CRYSTAL LK IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-220 LA SALLE IL AMERITECH ILLINOIS
815-221 LOCKPORT IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
815-222 ROCKFORD IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-223 LA SALLE IL AMERITECH ILLINOIS
815-224 LA SALLE IL AMERITECH ILLINOIS
815-225 MILLEDGEVL IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
815-226 ROCKFORD IL AMERITECH ILLINOIS
815-227 ROCKFORD IL AMERITECH ILLINOIS
815-228 OGLESBY IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-229 ROCKFORD IL AMERITECH ILLINOIS
815-230 PLAINFIELD IL BROADWING COMMUNICATIONS, LLC - IL
815-231 ROCKFORD IL AMERITECH ILLINOIS
815-232 FREEPORT IL VERIZON NORTH INC.-IL (CONTEL)
815-233 FREEPORT IL VERIZON NORTH INC.-IL (CONTEL)
815-234 BYRON IL VERIZON NORTH INC.-IL
815-235 FREEPORT IL VERIZON NORTH INC.-IL (CONTEL)
815-236 WOODSTOCK IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-237 GARDNER IL AMERITECH ILLINOIS
815-238 FREEPORT IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-239 PECATONICA IL VERIZON NORTH INC.-IL (CONTEL)
815-240 JOLIET IL ADBEEP, LLC
815-241 NORTHBROOK IL AMERICAN MESSAGING (AM), INC.
815-242 ROCKFORD IL METROCALL
815-243 ROCKFORD IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-244 MT CARROLL IL GALLATIN RIVER COMMUNICATIONS
815-245 WOODSTOCK IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-246 EARLVILLE IL VERIZON NORTH INC.-IL
815-247 SEWARD IL VERIZON NORTH INC.-IL (CONTEL)
815-248 DURAND IL VERIZON NORTH INC.-IL (CONTEL)
815-249 GRANDRIDGE IL VERIZON NORTH INC.-IL
815-250 LA SALLE IL COMCAST PHONE OF ILLINOIS, LLC - IL
815-251 NELSON IL GALLATIN RIVER COMMUNICATIONS
815-252 OGLESBY IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-253 KEMPTON IL FRONTIER COMMUNICATIONS OF ILLINOIS, INC.
815-254 PLAINFIELD IL AMERITECH ILLINOIS
815-255 WOODSTOCK IL ADBEEP, LLC
815-256 STELLE IL STELLE TELEPHONE CO.
815-257 STREATOR IL ILLINOIS VALLEY CELLULAR RSA 2-II PARTNERSHIP
815-258 JOLIET IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-259 THOMSON IL GALLATIN RIVER COMMUNICATIONS
815-260 JOLIET IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-261 CRYSTAL LK IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
815-262 ROCKFORD IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-263 KANKAKEE IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-264 WATERMAN IL VERIZON NORTH INC.-IL (CONTEL)
815-265 GILMAN IL AMERITECH ILLINOIS
815-266 FREEPORT IL VERIZON NORTH INC.-IL (CONTEL)
815-267 PLAINFIELD IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
815-268 ONARGA IL AMERITECH ILLINOIS
815-269 DANFORTH IL VERIZON SOUTH INC.-IL (ALLTEL)
815-270 ROSCOE IL CHARTER FIBERLINK - ILLINOIS, LLC - IL
815-271 MCHENRY IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
815-272 JOLIET IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
815-273 SAVANNA IL GALLATIN RIVER COMMUNICATIONS
815-274 JOLIET IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-275 FREEPORT IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-276 CRYSTAL LK IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
815-277 FRANKFORT IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
815-278 KANKAKEE IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-279 KANKAKEE IL AMERICAN MESSAGING (AM), INC.
815-280 JOLIET IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
815-281 GALENA IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-282 ROCKFORD IL AMERITECH ILLINOIS
815-283 JOLIET IL A BEEP LLC
815-284 DIXON IL GALLATIN RIVER COMMUNICATIONS
815-285 DIXON IL GALLATIN RIVER COMMUNICATIONS
815-286 HINCKLEY IL VERIZON NORTH INC.-IL (CONTEL)
815-287 VERONA IL AMERITECH ILLINOIS
815-288 DIXON IL GALLATIN RIVER COMMUNICATIONS
815-289 ROCKFORD IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-290 MINOOKA IL SBC INTERNET SERVICES, INC.
815-291 FREEPORT IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-292 SO BERGEN IL BERGEN TELEPHONE CO. - ILLINOIS
815-293 LOCKPORT IL AMERITECH ILLINOIS
815-294 LA GRANGE IL ARCH WIRELESS HOLDINGS, INC.
815-295 KANKAKEE IL T-MOBILE USA, INC.
815-296 ROCKFORD IL METROCALL
815-297 FREEPORT IL VERIZON NORTH INC.-IL (CONTEL)
815-298 ROCKFORD IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-299 ROCKFORD IL UNITED STATES CELLULAR CORP. - ILLINOIS