{"area_code":"872","type":"geographic","status":"active","country":"US","region":"Illinois","region_code":"IL","principal_city":"Chicago","cities":["Chicago","West Chicago"],"timezone":"America/Chicago","timezone_label":"Central Time","current_local_time":"2026-08-04 17:34:57","ten_digit_dialing":true,"service_type":null,"overlay_codes":["312"],"nearby_codes":["312","773","331","630","224","847"],"summary":"Area code 872 covers Chicago and nearby cities including West Chicago in Illinois, in the Central Time.","carrier_summary":{"nxx_prefixes":273,"blocks":2868,"wireless_pct":45,"top_carriers":[{"name":"T-MOBILE USA, INC.","blocks":701},{"name":"ONVOY, LLC","blocks":627},{"name":"BANDWIDTH.COM CLEC, LLC - IL","blocks":386},{"name":"NEW CINGULAR WIRELESS PCS, LLC - IL","blocks":320},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL","blocks":93},{"name":"ONVOY SPECTRUM, LLC","blocks":88}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/872","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}