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Area Codes > 503 > Central Office Codes

Exchange Rate Center State Operating Company
503-404 STFRD-SNDY OR MCIMETRO, ATS, INC.
503-405 GRESHAM OR MCIMETRO, ATS, INC.
503-406 CLACKAMAS OR MCIMETRO, ATS, INC.
503-407 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-408 PORTLAND OR QWEST CORPORATION
503-409 SALEM OR T-MOBILE USA, INC.
503-410 ST HELENS OR SPRINT SPECTRUM L.P.
503-411 OR
503-412 PORTLAND OR QWEST CORPORATION
503-413 PORTLAND OR QWEST CORPORATION
503-414 PORTLAND OR QWEST CORPORATION
503-415 PORTLAND OR QWEST CORPORATION
503-416 PORTLAND OR TIME WARNER TELECOM OF OREGON, LLC-OR
503-417 PORTLAND OR QWEST CORPORATION
503-418 PORTLAND OR QWEST CORPORATION
503-419 PORTLAND OR XO OREGON, INC.
503-420 DALLAS OR SPRINT SPECTRUM L.P.
503-421 PORTLAND OR SPRINT SPECTRUM L.P.
503-422 PORTLAND OR SPRINT SPECTRUM L.P.
503-423 PORTLAND OR QWEST CORPORATION
503-424 BEAVERTON OR OREGON TEL, LLC - OR
503-425 PORTLAND OR QWEST CORPORATION
503-426 PORTLAND OR NORTH COUNTY COMMUNICATIONS CORP. - OR
503-427 STFRD-SNDY OR LEVEL 3 COMMUNICATIONS, LLC - OR
503-428 SALEM OR BLUE LICENSES HOLDING, LLC
503-429 VERNONIA OR VERIZON NORTHWEST INC.-OR
503-430 BEAVERTON OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-431 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-432 PORTLAND OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-433 NORTH PL OR MCIMETRO, ATS, INC.
503-434 MCMINNVL OR VERIZON NORTHWEST INC.-OR
503-435 MCMINNVL OR VERIZON NORTHWEST INC.-OR
503-436 CANNON BCH OR QWEST CORPORATION
503-437 MCMINNVL OR NEXTEL COMMUNICATIONS, INC.
503-438 ST HELENS OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-439 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-440 SEASIDE OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-441 PORTLAND OR QWEST CORPORATION
503-442 PORTLAND OR T-MOBILE USA, INC.
503-443 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-444 PORTLAND OR VERIZON NORTHWEST INC.-OR
503-445 PORTLAND OR INTEGRA TELECOM OF OREGON, INC. - OR
503-446 SILVERTON OR SCS COMMUNICATIONS AND SECURITY, INC. - OR
503-447 NORTH PL OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-448 AUMSVLTRNR OR SCS COMMUNICATIONS AND SECURITY, INC. - OR
503-449 PORTLAND OR SPRINT SPECTRUM L.P.
503-450 PORTLAND OR QWEST CORPORATION
503-451 CLACKAMAS OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-452 PORTLAND OR QWEST CORPORATION
503-453 PORTLAND OR VERIZON NORTHWEST INC.-OR
503-454 STFRD-SNDY OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-455 WESTPORT OR QWEST CORPORATION
503-456 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-457 TILLAMOOK OR NEXTEL COMMUNICATIONS, INC.
503-458 KNAPPA OR CENTURYTEL OF OREGON, INC.
503-459 PORTLAND OR TIME WARNER TELECOM OF OREGON, LLC-OR
503-460 PORTLAND OR QWEST CORPORATION
503-461 CANNON BCH OR UNIVERSAL TELECOMMUNICATIONS, INC.
503-462 CLACKAMAS OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-463 SALEM OR QWEST CORPORATION
503-464 PORTLAND OR QWEST CORPORATION
503-465 GRESHAM OR VERIZON NORTHWEST INC.-OR
503-466 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-467 PORTLAND OR ELECTRIC LIGHTWAVE, LLC DBA INTEGRA TELECOM - OR
503-468 ASTORIA OR LEVEL 3 COMMUNICATIONS, LLC - OR
503-469 BEAVERTON OR VERIZON NORTHWEST INC.-OR
503-470 SEASIDE OR T-MOBILE USA, INC.
503-471 PORTLAND OR QWEST CORPORATION
503-472 MCMINNVL OR VERIZON NORTHWEST INC.-OR
503-473 PORTLAND OR MCIMETRO, ATS, INC.
503-474 MCMINNVL OR VERIZON NORTHWEST INC.-OR
503-475 PORTLAND OR BLUE LICENSES HOLDING, LLC
503-476 NEWBERG OR INTEGRA TELECOM OF OREGON, INC. - OR
503-477 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-478 PORTLAND OR QWEST CORPORATION
503-479 CLACKAMAS OR TIME WARNER TELECOM OF OREGON, LLC-OR
503-480 SALEM OR INTEGRA TELECOM OF OREGON, INC. - OR
503-481 PORTLAND OR T-MOBILE USA, INC.
503-482 STFRD-SNDY OR TIME WARNER TELECOM OF OREGON, LLC-OR
503-483 PACIFIC CY OR LEVEL 3 COMMUNICATIONS, LLC - OR
503-484 PORTLAND OR AT&T LOCAL
503-485 SALEM OR ADVANCED TELCOM GROUP, INC. - OR
503-486 STFRD-SNDY OR GLOBAL CROSSING LOCAL SERVICES,INC.-OR
503-487 NEWBERG OR GLOBAL CROSSING LOCAL SERVICES,INC.-OR
503-488 PORTLAND OR TIME WARNER TELECOM OF OREGON, LLC-OR
503-489 GRESHAM OR INTEGRA TELECOM OF OREGON, INC. - OR
503-490 PORTLAND OR SPRINT SPECTRUM L.P.
503-491 GRESHAM OR VERIZON NORTHWEST INC.-OR
503-492 GRESHAM OR VERIZON NORTHWEST INC.-OR
503-493 PORTLAND OR QWEST CORPORATION
503-494 PORTLAND OR QWEST CORPORATION
503-495 BEAVERTON OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-496 CLACKAMAS OR INTEGRA TELECOM OF OREGON, INC. - OR
503-497 PORTLAND OR QWEST CORPORATION
503-498 STFRD-SNDY OR TELEPORT COMMUNICATIONS GROUP, INC. - OR
503-499 PORTLAND OR QWEST CORPORATION
503-501 PORTLAND OR LCW WIRELESS LICENSE, LLC
503-502 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-503 OR
503-504 PORTLAND OR CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR