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Area Codes > 203 > Central Office Codes

Exchange Rate Center State Operating Company
203-813 BYRAM CT TELEPORT COMMUNICATIONS GROUP - NY
203-814 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-815 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-816 TRUMBULL CT GLOBAL CROSSING LOCAL SERVICES, INC.-CT
203-817 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-818 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-819 WATERBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-820 NORWALK CT SPRINT SPECTRUM L.P.
203-821 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-822 NORWALK CT AT&T LOCAL
203-823 NEW HAVEN CT COMCAST PHONE OF CONNECTICUT, INC. - CT
203-824 NEW HAVEN CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-825 DANBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-826 DANBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-827 OLDGRNWICH CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-828 SEYMOUR CT GLOBAL CROSSING LOCAL SERVICES, INC.-CT
203-829 NORWALK CT SPRINT SPECTRUM L.P.
203-830 DANBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-831 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-832 STAMFORD CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-833 NORWALK CT ARCH WIRELESS HOLDINGS, INC.
203-834 WILTON CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-835 NORWALK CT ARCH WIRELESS HOLDINGS, INC.
203-836 NORWALK CT ARCH WIRELESS HOLDINGS, INC.
203-837 DANBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-838 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-839 NORWALK CT ARCH WIRELESS HOLDINGS, INC.
203-840 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-841 WATERBURY CT CHOICE ONE COMMUNICATIONS, INC. - CT
203-842 NORWALK CT GLOBAL CROSSING LOCAL SERVICES, INC.-CT
203-843 NEW HAVEN CT AT&T LOCAL
203-844 FAIRFIELD CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-845 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-846 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-847 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-848 NEW HAVEN CT CONVERSENT COMMUNICATIONS OF CONNECTICUT, LLC - CT
203-849 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-851 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-852 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-853 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-854 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-855 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-856 NORWALK CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-857 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-858 NORWALK CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-859 NEW HAVEN CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-860 CT
203-861 GREENWICH CT VERIZON NEW YORK, INC.
203-862 GREENWICH CT VERIZON NEW YORK, INC.
203-863 GREENWICH CT VERIZON NEW YORK, INC.
203-864 GREENWICH CT VERIZON NEW YORK, INC.
203-865 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-866 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-867 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-868 NEW HAVEN CT AT&T LOCAL
203-869 GREENWICH CT VERIZON NEW YORK, INC.
203-870 BRIDGEPORT CT CABLEVISION LIGHTPATH, INC. - CT
203-871 BRANFORD CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-872 CHESHIRE CT AT&T LOCAL
203-873 BRIDGEPORT CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-874 MILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-875 DARIEN CT AT&T LOCAL
203-876 MILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-877 MILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-878 MILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-879 WOLCOTT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-880 TRUMBULL CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-881 SEYMOUR CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-882 MILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-883 STAMFORD CT LEVEL 3 COMMUNICATIONS, LLC - CT
203-884 GUILFORD CT GLOBAL CROSSING LOCAL SERVICES, INC.-CT
203-885 DANBURY CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-886 MERIDEN CT CHOICE ONE COMMUNICATIONS, INC. - CT
203-887 NEW HAVEN CT SPRINT SPECTRUM L.P.
203-888 SEYMOUR CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-889 NEW HAVEN CT GLOBAL CROSSING LOCAL SERVICES, INC.-CT
203-890 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-891 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-893 ANSONIDRBY CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-894 RIDGEFIELD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-895 TRUMBULL CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-896 MADISON CT GLOBAL CROSSING LOCAL SERVICES, INC.-CT
203-898 DARIEN CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-899 NORWALK CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-901 NEW HAVEN CT SPRINT SPECTRUM L.P.
203-902 NEW HAVEN CT GLOBAL NAPS, INC. - CT
203-903 NEW HAVEN CT LEVEL 3 COMMUNICATIONS, LLC - CT
203-904 NORWALK CT SPRINT SPECTRUM L.P.
203-905 STAMFORD CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-906 ANSONIDRBY CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-907 NEW HAVEN CT CHOICE ONE COMMUNICATIONS, INC. - CT
203-908 BRIDGEPORT CT OMNIPOINT COMMUNICATIONS, INC. - CT
203-909 NEW HAVEN CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-910 WATERBURY CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-911 CT
203-912 STAMFORD CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-913 BRIDGEPORT CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-915 NEW HAVEN CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-916 BRIDGEPORT CT LEVEL 3 COMMUNICATIONS, LLC - CT
203-918 STAMFORD CT NEW CINGULAR WIRELESS PCS, LLC - MA