{"area_code":"712","type":"geographic","status":"active","country":"US","region":"Iowa","region_code":"IA","principal_city":"Sioux City","cities":["Sioux City","Council Bluffs"],"timezone":"America/Chicago","timezone_label":"Central Time","current_local_time":"2026-08-04 15:01:01","ten_digit_dialing":false,"service_type":null,"overlay_codes":[],"nearby_codes":["402","531","515","641","308","785"],"summary":"Area code 712 covers Sioux City and nearby cities including Council Bluffs in Iowa, in the Central Time.","carrier_summary":{"nxx_prefixes":630,"blocks":4003,"wireless_pct":38,"top_carriers":[{"name":"ONVOY, LLC - IA","blocks":577},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA","blocks":470},{"name":"NEW CINGULAR WIRELESS PCS, LLC - IL","blocks":452},{"name":"QWEST CORPORATION","blocks":245},{"name":"WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH","blocks":236},{"name":"UNITED STATES CELLULAR - IA","blocks":213}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/712","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}