- Area Code 800 - California, Atwater US
- Area Code 801 - Alberta, Calgary United States
- Area Code 802 - Alberta, Calgary United States
- Area Code 803 - Alberta, Calgary United States
- Area Code 804 - Alberta, Calgary United States
- Area Code 805 - Alberta, Slave Lake United States
- Area Code 806 - Alberta, Calgary United States
- Area Code 807 - Alberta, Calgary United States
- Area Code 808 - Alberta, Calgary United States
- Area Code 809 - Alberta, Calgary United States
- Area Code 810 - Alabama, Rogersville US
- Area Code 811 - New York, New York US
- Area Code 812 - Alberta, Bonnyville United States
- Area Code 813 - Alberta, Calgary United States
- Area Code 814 - Alberta, Grande Prairie United States
- Area Code 815 - Alberta, Calgary United States
- Area Code 816 - Alberta, Calgary United States
- Area Code 817 - Alberta, Hinton United States
- Area Code 818 - Alberta, Calgary United States
- Area Code 819 - Alberta, Calgary United States
- Area Code 820 - Alberta, Drumheller United States
- Area Code 821 - Alberta, Drumheller United States
- Area Code 822 - Alberta, East Coulee United States
- Area Code 823 - Alberta, Drumheller United States
- Area Code 824 - Alberta, Nobleford United States
- Area Code 825 - Alaska, Akiachak US
- Area Code 826 - Alberta, Calgary United States
- Area Code 827 - Alberta, Calgary United States
- Area Code 828 - Alberta, Calgary United States
- Area Code 829 - Alberta, Calgary United States
- Area Code 830 - Alberta, Calgary United States
- Area Code 831 - Alberta, Calgary United States
- Area Code 832 - Alberta, Seven Persons United States
- Area Code 833 - Alberta, Burdett United States
- Area Code 834 - Alberta, Irvine United States
- Area Code 835 - Alberta, Calgary United States
- Area Code 836 - Alberta, Calgary United States
- Area Code 837 - Alberta, Calgary United States
- Area Code 838 - Alberta, Hilda United States
- Area Code 839 - Alberta, Schuler United States
- Area Code 840 - Alberta, Grand Centre United States
- Area Code 841 - Alberta, High Level United States
- Area Code 842 - Alberta, Wainwright United States
- Area Code 843 - Alberta, Rimbey United States
- Area Code 844 - Alberta, Rocky Mountain House United States
- Area Code 845 - Alberta, Rocky Mountain House United States
- Area Code 846 - Alberta, Rocky Mountain House United States
- Area Code 847 - Alberta, Rocky Mountain House United States
- Area Code 848 - Alberta, Warburg United States
- Area Code 849 - Alberta, Slave Lake United States
- Area Code 850 - Alberta, Calgary United States
- Area Code 851 - Alberta, Cochrane United States
- Area Code 852 - Alberta, Calgary United States
- Area Code 853 - Alberta, Vermilion United States
- Area Code 854 - Alberta, Hanna United States
- Area Code 855 - Alberta, Cochrane United States
- Area Code 856 - Alberta, Hughenden United States
- Area Code 857 - Alberta, Hanna United States
- Area Code 858 - Alberta, Chauvin United States
- Area Code 859 - Alberta, Waterton Park United States
- Area Code 860 - Alberta, Calgary United States
- Area Code 861 - Alberta, Calgary United States
- Area Code 862 - Alberta, Calgary United States
- Area Code 863 - Alberta, Calgary United States
- Area Code 864 - Alberta, Spirit River United States
- Area Code 865 - Alberta, Hinton United States
- Area Code 866 - Alberta, Medicine Hat United States
- Area Code 867 - Alberta, Foremost United States
- Area Code 868 - Alberta, Manyberries United States
- Area Code 869 - Alberta, Calgary United States
- Area Code 870 - Alberta, Calgary United States
- Area Code 871 - Alberta, Lloydminster United States
- Area Code 872 - Alberta, Red Deer United States
- Area Code 873 - Alberta, Calgary United States
- Area Code 874 - Alberta, Calgary United States
- Area Code 875 - Alberta, Calgary United States
- Area Code 876 - Alberta, Big Valley United States
- Area Code 877 - Alberta, Red Deer United States
- Area Code 878 - Alberta, Medicine Hat United States
- Area Code 879 - Alberta, Alliance United States
- Area Code 880 - Alberta, Calgary United States
- Area Code 881 - Alberta, Morley United States
- Area Code 882 - Alberta, Castor United States
- Area Code 883 - Alberta, Donalda United States
- Area Code 884 - Alberta, Halkirk United States
- Area Code 885 - Alberta, Black Falds United States
- Area Code 886 - Alberta, Penhold United States
- Area Code 887 - Alberta, Sylvan Lake United States
- Area Code 888 - Alberta, Calgary United States
- Area Code 889 - Alberta, Calgary United States
- Area Code 890 - Alberta, Calgary United States
- Area Code 891 - Alberta, Calgary United States
- Area Code 892 - Alberta, Lethbridge United States
- Area Code 893 - Alberta, Elkwater United States
- Area Code 894 - Alberta, Lethbridge United States
- Area Code 895 - Alberta, Lamont United States
- Area Code 896 - Alberta, Red Deer United States
- Area Code 897 - Alberta, Champion United States
- Area Code 898 - Alberta, Jenner United States
- Area Code 899 - Alberta, Calgary United States