{"area_code":"623","type":"geographic","status":"active","country":"US","region":"Arizona","region_code":"AZ","principal_city":"Phoenix","cities":["Phoenix","Glendale","Peoria","Surprise","Avondale","Sun City West"],"timezone":"America/Phoenix","timezone_label":"Mountain Time (Arizona, no DST)","current_local_time":"2026-08-04 13:10:58","ten_digit_dialing":true,"service_type":null,"overlay_codes":["480","602"],"nearby_codes":["602","480","928","520","702","725"],"summary":"Area code 623 covers Phoenix and nearby cities including Glendale, Peoria, Surprise in Arizona, in the Mountain Time (Arizona, no DST).","carrier_summary":{"nxx_prefixes":310,"blocks":2530,"wireless_pct":44,"top_carriers":[{"name":"T-MOBILE USA, INC.","blocks":521},{"name":"ONVOY, LLC - AZ","blocks":375},{"name":"QWEST CORPORATION","blocks":322},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ","blocks":272},{"name":"COMCAST IP PHONE, LLC","blocks":186},{"name":"NEW CINGULAR WIRELESS PCS, LLC","blocks":161}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/623","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}