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Area Codes > 773 > Central Office Codes

Exchange Rate Center State Operating Company
773-200 IL AMERITECH ILLINOIS
773-201 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-202 CHICGOZN03 IL AMERITECH ILLINOIS
773-203 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-204 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-205 CHICGOZN03 IL AMERITECH ILLINOIS
773-206 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-207 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-208 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-209 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-210 CHICGOZN01 IL AMERITECH ILLINOIS
773-211 IL
773-212 CHICGOZN03 IL ARCH WIRELESS HOLDINGS, INC.
773-213 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-214 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-215 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-216 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-218 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-220 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-221 CHICGOZN09 IL AMERITECH ILLINOIS
773-222 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-223 CHICGOZN06 IL ARCH WIRELESS HOLDINGS, INC.
773-224 CHICGOZN07 IL AMERITECH ILLINOIS
773-225 CHICGOZN03 IL T-MOBILE USA, INC.
773-226 CHICGOZN10 IL T-MOBILE USA, INC.
773-227 CHICGOZN04 IL AMERITECH ILLINOIS
773-228 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-229 CHICGOZN08 IL AMERITECH ILLINOIS
773-230 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-231 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-232 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-233 CHICGOZN10 IL AMERITECH ILLINOIS
773-234 CHICGOZN01 IL ADBEEP, LLC
773-235 CHICGOZN04 IL AMERITECH ILLINOIS
773-236 CHICGOZN01 IL ADBEEP, LLC
773-237 CHICGOZN05 IL AMERITECH ILLINOIS
773-238 CHICGOZN10 IL AMERITECH ILLINOIS
773-239 CHICGOZN10 IL AMERITECH ILLINOIS
773-240 CHICGOZN10 IL T-MOBILE USA, INC.
773-241 CHICGOZN07 IL AMERITECH ILLINOIS
773-242 CHICGOZN06 IL AMERITECH ILLINOIS
773-243 CHICGOZN03 IL XO ILLINOIS, INC.
773-244 CHICGOZN04 IL AMERITECH ILLINOIS
773-245 CHICGOZN01 IL ADBEEP, LLC
773-246 CHICGOZN01 IL BEEPERMART, INC.
773-247 CHICGOZN06 IL AMERITECH ILLINOIS
773-248 CHICGOZN04 IL AMERITECH ILLINOIS
773-249 CHICGOZN11 IL MCIMETRO, ATS, INC.
773-250 CHICGOZN02 IL MCIMETRO, ATS, INC.
773-251 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-252 CHICGOZN04 IL AMERITECH ILLINOIS
773-253 CHICGOZN10 IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
773-254 CHICGOZN06 IL AMERITECH ILLINOIS
773-255 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-256 CHICGOZN07 IL AMERITECH ILLINOIS
773-257 CHICGOZN06 IL AMERITECH ILLINOIS
773-258 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-259 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-260 CHICGOZN10 IL AMERITECH ILLINOIS
773-261 CHICGOZN05 IL AMERITECH ILLINOIS
773-262 CHICGOZN02 IL AMERITECH ILLINOIS
773-263 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-264 CHICGOZN10 IL AMERITECH ILLINOIS
773-265 CHICGOZN06 IL AMERITECH ILLINOIS
773-266 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-267 CHICGOZN02 IL AMERITECH ILLINOIS
773-268 CHICGOZN07 IL AMERITECH ILLINOIS
773-269 CHICGOZN04 IL AT&T LOCAL
773-271 CHICGOZN02 IL AMERITECH ILLINOIS
773-272 CHICGOZN03 IL MCIMETRO, ATS, INC.
773-273 CHICGOZN02 IL AMERITECH ILLINOIS
773-274 CHICGOZN02 IL AMERITECH ILLINOIS
773-275 CHICGOZN02 IL AMERITECH ILLINOIS
773-276 CHICGOZN04 IL AMERITECH ILLINOIS
773-277 CHICGOZN06 IL AMERITECH ILLINOIS
773-278 CHICGOZN04 IL AMERITECH ILLINOIS
773-279 CHICGOZN02 IL AMERITECH ILLINOIS
773-280 CHICGOZN01 IL ADBEEP, LLC
773-281 CHICGOZN04 IL AMERITECH ILLINOIS
773-282 CHICGOZN03 IL AMERITECH ILLINOIS
773-283 CHICGOZN03 IL AMERITECH ILLINOIS
773-284 CHICGOZN08 IL AMERITECH ILLINOIS
773-285 CHICGOZN07 IL AMERITECH ILLINOIS
773-286 CHICGOZN03 IL AMERITECH ILLINOIS
773-287 CHICGOZN05 IL AMERITECH ILLINOIS
773-288 CHICGOZN07 IL AMERITECH ILLINOIS
773-289 CHICGOZN04 IL MCIMETRO, ATS, INC.
773-290 CHICGOZN02 IL BROADWING COMMUNICATIONS, LLC - IL
773-291 CHICGOZN10 IL AMERITECH ILLINOIS
773-292 CHICGOZN04 IL AMERITECH ILLINOIS
773-293 CHICGOZN02 IL AMERITECH ILLINOIS
773-294 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-295 CHICGOZN05 IL MCIMETRO, ATS, INC.
773-296 CHICGOZN04 IL AMERITECH ILLINOIS
773-297 CHICGOZN03 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-298 CHICGOZN10 IL AMERITECH ILLINOIS
773-299 CHICGOZN06 IL MCIMETRO, ATS, INC.
773-300 IL AMERITECH ILLINOIS
773-301 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-303 CHICGOZN02 IL ALLEGIANCE TELECOM, INC. - IL