{"area_code":"503","type":"geographic","status":"active","country":"US","region":"Oregon","region_code":"OR","principal_city":"Portland","cities":["Portland","Salem","Gresham","Hillsboro","Beaverton","Tigard","Lake Oswego","Keizer","Aloha","McMinnville","Milwaukie","Oregon City","Tualatin","West Linn","Woodburn"],"timezone":"America/Los_Angeles","timezone_label":"Pacific Time","current_local_time":"2026-08-04 14:08:38","ten_digit_dialing":true,"service_type":null,"overlay_codes":["971"],"nearby_codes":["971","458","541","253","360","206"],"summary":"Area code 503 covers Portland and nearby cities including Salem, Gresham, Hillsboro in Oregon, in the Pacific Time.","carrier_summary":{"nxx_prefixes":784,"blocks":4400,"wireless_pct":37,"top_carriers":[{"name":"QWEST CORPORATION","blocks":554},{"name":"NEW CINGULAR WIRELESS PCS, LLC","blocks":528},{"name":"T-MOBILE USA, INC.","blocks":442},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR","blocks":396},{"name":"ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER","blocks":322},{"name":"ONVOY, LLC - OR","blocks":316}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/503","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}