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Area Codes > 503 > Central Office Codes

Exchange Rate Center State Operating Company
503-200 PORTLAND OR BLUE LICENSES HOLDING, LLC
503-201 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-202 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-203 PORTLAND OR QWEST CORPORATION
503-204 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-205 PORTLAND OR MCIMETRO, ATS, INC.
503-206 PORTLAND OR 360NETWORKS (USA) INC. - OR
503-207 BEAVERTON OR MCIMETRO, ATS, INC.
503-209 PORTLAND OR NEXTEL COMMUNICATIONS, INC.
503-210 CLACKAMAS OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-211 OR
503-212 CLACKAMAS OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-213 BEAVERTON OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-214 BEAVERTON OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-215 PORTLAND OR QWEST CORPORATION
503-216 PORTLAND OR QWEST CORPORATION
503-217 SHERWOOD OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-218 STFRD-SNDY OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-219 PORTLAND OR QWEST CORPORATION
503-220 PORTLAND OR QWEST CORPORATION
503-221 PORTLAND OR QWEST CORPORATION
503-222 PORTLAND OR QWEST CORPORATION
503-223 PORTLAND OR QWEST CORPORATION
503-224 PORTLAND OR QWEST CORPORATION
503-225 PORTLAND OR QWEST CORPORATION
503-226 PORTLAND OR QWEST CORPORATION
503-227 PORTLAND OR QWEST CORPORATION
503-228 PORTLAND OR QWEST CORPORATION
503-229 PORTLAND OR QWEST CORPORATION
503-230 PORTLAND OR QWEST CORPORATION
503-231 PORTLAND OR QWEST CORPORATION
503-232 PORTLAND OR QWEST CORPORATION
503-233 PORTLAND OR QWEST CORPORATION
503-234 PORTLAND OR QWEST CORPORATION
503-235 PORTLAND OR QWEST CORPORATION
503-236 PORTLAND OR QWEST CORPORATION
503-237 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-238 PORTLAND OR QWEST CORPORATION
503-239 PORTLAND OR QWEST CORPORATION
503-240 PORTLAND OR QWEST CORPORATION
503-241 PORTLAND OR QWEST CORPORATION
503-242 PORTLAND OR QWEST CORPORATION
503-243 PORTLAND OR QWEST CORPORATION
503-244 PORTLAND OR QWEST CORPORATION
503-245 PORTLAND OR QWEST CORPORATION
503-246 PORTLAND OR QWEST CORPORATION
503-247 PORTLAND OR QWEST CORPORATION
503-248 PORTLAND OR QWEST CORPORATION
503-249 PORTLAND OR QWEST CORPORATION
503-250 PORTLAND OR QWEST CORPORATION
503-251 PORTLAND OR QWEST CORPORATION
503-252 PORTLAND OR QWEST CORPORATION
503-253 PORTLAND OR QWEST CORPORATION
503-254 PORTLAND OR QWEST CORPORATION
503-255 PORTLAND OR QWEST CORPORATION
503-256 PORTLAND OR QWEST CORPORATION
503-257 PORTLAND OR QWEST CORPORATION
503-258 PORTLAND OR QWEST CORPORATION
503-259 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-260 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-261 PORTLAND OR QWEST CORPORATION
503-262 PORTLAND OR QWEST CORPORATION
503-263 CANBYNEEDY OR CANBY TELEPHONE ASSOCIATION
503-264 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-265 PORTLAND OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-266 CANBYNEEDY OR CANBY TELEPHONE ASSOCIATION
503-267 PORTLAND OR T-MOBILE USA, INC.
503-268 BEAVERTON OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-269 SALEM OR SPRINT SPECTRUM L.P.
503-270 BEAVERTON OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-271 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-272 GOVENTCAMP OR CENTURYTEL OF OREGON, INC.
503-273 PORTLAND OR QWEST CORPORATION
503-274 PORTLAND OR QWEST CORPORATION
503-275 PORTLAND OR QWEST CORPORATION
503-276 PORTLAND OR QWEST CORPORATION
503-277 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-279 PORTLAND OR QWEST CORPORATION
503-280 PORTLAND OR QWEST CORPORATION
503-281 PORTLAND OR QWEST CORPORATION
503-282 PORTLAND OR QWEST CORPORATION
503-283 PORTLAND OR QWEST CORPORATION
503-284 PORTLAND OR QWEST CORPORATION
503-285 PORTLAND OR QWEST CORPORATION
503-286 PORTLAND OR QWEST CORPORATION
503-287 PORTLAND OR QWEST CORPORATION
503-288 PORTLAND OR QWEST CORPORATION
503-289 PORTLAND OR QWEST CORPORATION
503-290 PORTLAND OR MCIMETRO, ATS, INC.
503-291 PORTLAND OR QWEST CORPORATION
503-292 PORTLAND OR QWEST CORPORATION
503-293 PORTLAND OR QWEST CORPORATION
503-294 PORTLAND OR QWEST CORPORATION
503-295 PORTLAND OR QWEST CORPORATION
503-296 PORTLAND OR QWEST CORPORATION
503-297 PORTLAND OR QWEST CORPORATION
503-298 ASTORIA OR LEVEL 3 COMMUNICATIONS, LLC - OR
503-299 PORTLAND OR QWEST CORPORATION
503-300 BAY CITY OR CHARTER FIBERLINK OR-CCVII, LLC - OR
503-301 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.