{"area_code":"983","type":"geographic","status":"active","country":"US","region":"Colorado","region_code":"CO","principal_city":"Denver","cities":["Denver","Aurora","Lakewood","Thornton","Arvada","Westminster","Boulder","Longmont","Loveland","Broomfield","Castle Rock","Commerce City","Parker","Littleton","Northglenn","Brighton","Castlewood","Columbine","Englewood","Highlands Ranch","Ken Caryl","Lafayette","Southglenn","Wheat Ridge"],"timezone":"America/Denver","timezone_label":"Mountain Time","current_local_time":"2026-11-04 04:11:10","ten_digit_dialing":true,"service_type":null,"overlay_codes":["303","720"],"nearby_codes":["303","720","748","970","719","307"],"summary":"Area code 983 covers Denver, Colorado (Mountain Time) and nearby Aurora, Lakewood and Thornton; overlays 303 and 720 share the same area.","carrier_summary":{"nxx_prefixes":41,"blocks":380,"wireless_pct":48,"top_carriers":[{"name":"ONVOY, LLC - CO","blocks":103},{"name":"NEW CINGULAR WIRELESS PCS, LLC","blocks":78},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO","blocks":69},{"name":"BANDWIDTH.COM CLEC, LLC - CO","blocks":17},{"name":"TELEPORT COMMUNICATIONS AMERICA, LLC - CO","blocks":15},{"name":"ONVOY SPECTRUM, LLC","blocks":14}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/983","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-11-02"}