Look up any phone number starting with 503 to identify the owner name, address, spam reports, and more. The 503 area code serves the northwestern region of Oregon, including the cities of Portland, Salem, and Astoria.
Enter a full 10-digit number to identify the caller and whether it has been reported as spam.
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Area code 503 covers the northwestern corner of the state of Oregon.
Area code 503 is overlaid by area code 971 . Area code 503 was established in 1947, and area code 971 was introduced in stages, completed in 2008. Ten-digit dialing is required in this region.
Area code 503 is a general purpose code which was placed in service on January 1, 1947.
Our Oregon phone number lookup for the 503 area code analyzes the three-digit prefix to identify the initially assigned telecommunications company and rate center. This prefix code data may help to determine the U.S. carrier, Oregon geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| QWEST CORPORATION | 213 |
| ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 110 |
| NEW CINGULAR WIRELESS PCS, LLC | 71 |
| T-MOBILE USA, INC. | 55 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 54 |
| ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 51 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - OR | 35 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 22 |
| LEVEL 3 TELECOM OF OREGON, LLC - OR | 20 |
| GLOBAL CROSSING LOCAL SERVICES, INC. - OR | 16 |
| UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | 12 |
| LEVEL 3 COMMUNICATIONS, LLC - OR | 10 |
| USA MOBILITY WIRELESS, INC. | 8 |
| METROPCS, INC. | 7 |
| CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 6 |
| ONVOY, LLC - OR | 6 |
| COMCAST IP PHONE, LLC | 5 |
| CASCADE UTILITIES, INC. | 4 |
| ASTOUND BROADBAND, LLC - OR | 3 |
| CANBY TEL. ASSN. | 3 |
| XO OREGON, INC. | 3 |
| MOLALLA TEL. CO. | 2 |
| STAYTON COOP. TEL. CO. | 2 |
| BEAVER CREEK COOP. TEL. CO. | 1 |
| BEAVER CREEK COOPERATIVE TELEPHONE COMPANY - OR | 1 |
| CLEAR CREEK MUTUAL TEL. CO. | 1 |
| COLTON TEL. CO. | 1 |
| GERVAIS TEL. CO. | 1 |
| MAGNA5 LLC | 1 |
| MONITOR COOP. TEL. CO. | 1 |
| MT. ANGEL TEL. CO. | 1 |
| NEHALEM TELECOMMS, INC. DBA NEHALEM TEL & TEL | 1 |
| NORTH COUNTY COMMUNICATION CORPORATION - OR | 1 |
| OREGONTEL, LLC - OR | 1 |
| PACIFIC WAVE COMMUNICATIONS | 1 |
| PEOPLES TEL. CO. | 1 |
| SCIO MUTUAL TEL. CO. | 1 |
| ST. PAUL COOP. TEL. ASSN. | 1 |
| TELTRUST CORPORATION - OR | 1 |
| YMAX COMMUNICATIONS CORP. - OR | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| PORTLAND | 323 |
| BEAVERTON | 104 |
| SALEM | 73 |
| CLACKAMAS | 49 |
| STFRD-SNDY | 25 |
| GRESHAM | 21 |
| MCMINNVL | 12 |
| WOODBURN | 8 |
| ASTORIA | 7 |
| DALLAS | 7 |
| NEWBERG | 7 |
| SHERWOOD | 7 |
| NORTH PL | 6 |
| ST HELENS | 6 |
| TILLAMOOK | 6 |
| SEASIDE | 5 |
| STAYTON | 4 |
| CANBYNEEDY | 3 |
| ESTACADA | 3 |
| AUMSVLTRNR | 2 |
| AURORA | 2 |
| BEAVER | 2 |
| BEAVER CRK | 2 |
| CLATSKANIE | 2 |
| DAYTON | 2 |
| GRANDRONDE | 2 |
| HOOD LAND | 2 |
| KNAPPA | 2 |
| MOLALLA | 2 |
| MOUNTANGEL | 2 |
| RAINIER | 2 |
| SCAPPOOSE | 2 |
| SILVERTON | 2 |
| WESTPORT | 2 |
| AMITY | 1 |
| BAY CITY | 1 |
| CANNON BCH | 1 |
| CARLTON | 1 |
| CHARBONNEU | 1 |
| CLOVERDALE | 1 |
| COLTON | 1 |
| CORBETT | 1 |
| DETROIT | 1 |
| FALLS CITY | 1 |
| GARIBALDI | 1 |
| GERVAIS | 1 |
| GOVENTCAMP | 1 |
| GRAND IS | 1 |
| JEWELL | 1 |
| LYONS | 1 |
| MILL CITY | 1 |
| MONITOR | 1 |
| NEHALEM | 1 |
| PACIFIC CY | 1 |
| REDLAND | 1 |
| ROCKAWAY | 1 |
| SCIO | 1 |
| SHERIDAN | 1 |
| ST PAUL | 1 |
| VERNONIA | 1 |
| WARRENTON | 1 |
| WILLAMINA | 1 |
| YAMHILL | 1 |
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