{"area_code":"571","type":"geographic","status":"active","country":"US","region":"Virginia","region_code":"VA","principal_city":"Washington","cities":["Washington","Alexandria","Leesburg","Manassas","Annandale","Arlington","Burke","Centreville","Chantilly","Dale City","Fairfax","Franconia","Groveton","Herndon","Lake Ridge","McLean","Mount Vernon","Oakton","Reston","West Springfield"],"timezone":"America/New_York","timezone_label":"Eastern Time","current_local_time":"2026-08-04 17:08:38","ten_digit_dialing":true,"service_type":null,"overlay_codes":["703"],"nearby_codes":["703","202","771","227","240","301"],"summary":"Area code 571 covers Washington and nearby cities including Alexandria, Leesburg, Manassas in Virginia, in the Eastern Time.","carrier_summary":{"nxx_prefixes":623,"blocks":6462,"wireless_pct":46,"top_carriers":[{"name":"NEW CINGULAR WIRELESS PCS, LLC - DC","blocks":1089},{"name":"OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC","blocks":874},{"name":"ONVOY, LLC - VA","blocks":840},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA","blocks":592},{"name":"BANDWIDTH.COM CLEC, LLC - VA","blocks":514},{"name":"MCIMETRO ACCESS TRANSMISSION SERVICES LLC","blocks":393}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/571","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}