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Area Codes > 503 > Central Office Codes

Exchange Rate Center State Operating Company
503-916 PORTLAND OR QWEST CORPORATION
503-917 DALLAS OR SPRINT SPECTRUM L.P.
503-918 SALEM OR ARCH WIRELESS HOLDINGS, INC.
503-919 CLACKAMAS OR BLUE LICENSES HOLDING, LLC
503-920 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-921 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-922 PORTLAND OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-923 BEAVERTON OR UNIVERSAL TELECOMMUNICATIONS, INC.
503-924 BEAVERTON OR INTEGRA TELECOM OF OREGON, INC. - OR
503-925 SHERWOOD OR VERIZON NORTHWEST INC.-OR
503-927 PORTLAND OR T-MOBILE USA, INC.
503-928 PORTLAND OR BLUE LICENSES HOLDING, LLC
503-929 PORTLAND OR BLUE LICENSES HOLDING, LLC
503-930 SALEM OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-931 SALEM OR BLUE LICENSES HOLDING, LLC
503-932 SALEM OR NEXTEL COMMUNICATIONS, INC.
503-933 PORTLAND OR LCW WIRELESS LICENSE, LLC
503-934 SALEM OR QWEST CORPORATION
503-935 PORTLAND OR LCW WIRELESS LICENSE, LLC
503-936 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-937 PORTLAND OR MCIMETRO, ATS, INC.
503-938 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-939 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-940 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-941 BEAVERTON OR TIME WARNER TELECOM OF OREGON, LLC-OR
503-942 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-943 PORTLAND OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-944 PORTLAND OR QWEST CORPORATION
503-945 SALEM OR QWEST CORPORATION
503-946 PORTLAND OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-947 SALEM OR QWEST CORPORATION
503-948 PORTLAND OR QWEST CORPORATION
503-949 SALEM OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-950 OR
503-951 WOODBURN OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-952 PORTLAND OR QWEST CORPORATION
503-953 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-954 PORTLAND OR LCW WIRELESS LICENSE, LLC
503-955 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-956 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-957 PORTLAND OR SPRINT SPECTRUM L.P.
503-958 OR
503-959 OR
503-960 PORTLAND OR LCW WIRELESS LICENSE, LLC
503-961 PORTLAND OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-962 PORTLAND OR QWEST CORPORATION
503-963 PORTLAND OR QWEST CORPORATION
503-965 PACIFIC CY OR UNITED TELEPHONE - NORTHWEST
503-966 WESTPORT OR 360NETWORKS (USA) INC. - OR
503-967 SALEM OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-968 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-969 PORTLAND OR NEXTEL COMMUNICATIONS, INC.
503-970 PORTLAND OR BLUE LICENSES HOLDING, LLC
503-972 PORTLAND OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-973 PORTLAND OR QWEST CORPORATION
503-974 CLACKAMAS OR PAC - WEST TELECOMM, INC. - OR
503-975 PORTLAND OR SPRINT SPECTRUM L.P.
503-976 OR
503-977 PORTLAND OR QWEST CORPORATION
503-978 PORTLAND OR QWEST CORPORATION
503-980 WOODBURN OR QWEST CORPORATION
503-981 WOODBURN OR QWEST CORPORATION
503-982 WOODBURN OR QWEST CORPORATION
503-983 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-984 WOODBURN OR T-MOBILE USA, INC.
503-985 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-986 SALEM OR QWEST CORPORATION
503-987 SCAPPOOSE OR COMCAST PHONE OF OREGON, LLC - OR
503-988 PORTLAND OR QWEST CORPORATION
503-989 WOODBURN OR BLUE LICENSES HOLDING, LLC
503-990 SALEM OR SPRINT SPECTRUM L.P.
503-991 SALEM OR NEXTEL COMMUNICATIONS, INC.
503-992 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-993 PORTLAND OR ARCH WIRELESS HOLDINGS, INC.
503-994 WARRENTON OR 360NETWORKS (USA) INC. - OR
503-995 PORTLAND OR LCW WIRELESS LICENSE, LLC
503-997 PORTLAND OR T-MOBILE USA, INC.
503-998 PORTLAND OR T-MOBILE USA, INC.
503-999 SALEM OR T-MOBILE USA, INC.