{"area_code":"403","type":"geographic","status":"active","country":"CA","region":"Alberta","region_code":"AB","principal_city":"Calgary","cities":["Calgary","Red Deer","Lethbridge","Medicine Hat","Strathmore","High River","Canmore","Brooks","Rocky Mountain House","Crowsnest Pass","Olds","Banff"],"timezone":"America/Edmonton","timezone_label":"Mountain Time","current_local_time":"2026-08-05 02:01:51","ten_digit_dialing":true,"service_type":null,"overlay_codes":["368","587","825"],"nearby_codes":["368","587","825","780","639","306"],"summary":"Area code 403 covers Calgary and nearby cities including Red Deer, Lethbridge, Medicine Hat in Alberta, in the Mountain Time.","carrier_summary":{"nxx_prefixes":780,"blocks":780,"wireless_pct":33,"top_carriers":[{"name":"TELUS COMMUNICATIONS, INC.","blocks":400},{"name":"TELUS MOBILITY CELLULAR, INC.","blocks":95},{"name":"ROGERS COMMUNICATIONS CANADA INC.","blocks":80},{"name":"BELL CELLULAR, INC.","blocks":64},{"name":"SHAW TELECOM INC. - BC","blocks":59},{"name":"BELL WEST, INC. - ON","blocks":22}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/403","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}