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Area Codes > 410 > Central Office Codes

Exchange Rate Center State Operating Company
410-800 BALTIMORE MD NATIONSLINE, INC.-MD
410-801 BALTIMORE MD VERIZON MARYLAND, INC.
410-802 CATONSVL MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-803 FORK MD VERIZON MARYLAND, INC.
410-804 BALTIMORE MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-805 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-806 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-807 CATONSVL MD XSPEDIUS MANAGEMENT CO SWITCHES SERVICES, LLC - MD
410-808 FALLSTON MD NEXTEL COMMUNICATIONS, INC.
410-809 BEL AIR MD CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD
410-810 CHESTERTN MD VERIZON MARYLAND, INC.
410-811 MD
410-812 TOWSON MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-813 WATERLO236 MD VERIZON MARYLAND, INC.
410-814 BALTIMORE MD CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD
410-815 WATERLO236 MD VERIZON MARYLAND, INC.
410-816 TOWSON MD VERIZON MARYLAND, INC.
410-817 FORK MD VERIZON MARYLAND, INC.
410-818 CATONSVL MD TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD
410-819 EASTON MD VERIZON MARYLAND, INC.
410-820 EASTON MD VERIZON MARYLAND, INC.
410-821 TOWSON MD VERIZON MARYLAND, INC.
410-822 EASTON MD VERIZON MARYLAND, INC.
410-823 TOWSON MD VERIZON MARYLAND, INC.
410-824 WATERLO236 MD XSPEDIUS MANAGEMENT CO SWITCHES SERVICES, LLC - MD
410-825 TOWSON MD VERIZON MARYLAND, INC.
410-826 GLENBURNIE MD VERIZON MARYLAND, INC.
410-827 QUEENSTOWN MD VERIZON MARYLAND, INC.
410-828 TOWSON MD VERIZON MARYLAND, INC.
410-829 EASTON MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-830 TOWSON MD VERIZON MARYLAND, INC.
410-831 SALISBURY MD VERIZON MARYLAND, INC.
410-832 TOWSON MD VERIZON MARYLAND, INC.
410-833 REISTERSTN MD VERIZON MARYLAND, INC.
410-834 WATERLO236 MD VERIZON MARYLAND, INC.
410-835 WILLARDS MD VERIZON MARYLAND, INC.
410-836 BEL AIR MD VERIZON MARYLAND, INC.
410-837 BALTIMORE MD VERIZON MARYLAND, INC.
410-838 BEL AIR MD VERIZON MARYLAND, INC.
410-839 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-840 REISTERSTN MD VERIZON MARYLAND, INC.
410-841 SEVERNA PK MD VERIZON MARYLAND, INC.
410-842 TOWSON MD MCIMETRO, ATS, INC.
410-843 BALTIMORE MD TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD
410-844 BALTIMORE MD VERIZON MARYLAND, INC.
410-845 SALISBURY MD SPRINT SPECTRUM L.P.
410-846 SEVERN MD MCIMETRO, ATS, INC.
410-847 TOWSON MD VERIZON MARYLAND, INC.
410-848 WESTMINSTR MD VERIZON MARYLAND, INC.
410-849 SHERWD FOR MD VERIZON MARYLAND, INC.
410-850 GLENBURNIE MD VERIZON MARYLAND, INC.
410-851 TOWSON MD VERIZON MARYLAND, INC.
410-852 CATONSVL MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-853 TOWSON MD VERIZON MARYLAND, INC.
410-854 WATERLO236 MD VERIZON MARYLAND, INC.
410-855 GLENBURNIE MD VERIZON MARYLAND, INC.
410-856 BALTIMORE MD VERIZON MARYLAND, INC.
410-857 WESTMINSTR MD VERIZON MARYLAND, INC.
410-858 ANNAPOLIS MD VERIZON MARYLAND, INC.
410-859 GLENBURNIE MD VERIZON MARYLAND, INC.
410-860 SALISBURY MD VERIZON MARYLAND, INC.
410-861 WESTMINSTR MD VERIZON MARYLAND, INC.
410-862 WATERLO236 MD VERIZON MARYLAND, INC.
410-863 GLENBURNIE MD VERIZON MARYLAND, INC.
410-864 BALTIMORE MD MCIMETRO, ATS, INC.
410-865 GLENBURNIE MD VERIZON MARYLAND, INC.
410-866 ESSEX MD VERIZON MARYLAND, INC.
410-867 WEST RIVER MD VERIZON MARYLAND, INC.
410-868 CATONSVL MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-869 CATONSVL MD VERIZON MARYLAND, INC.
410-870 PARKVILLE MD COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
410-871 WESTMINSTR MD VERIZON MARYLAND, INC.
410-872 COLUMBIA MD VERIZON MARYLAND, INC.
410-873 NANTICOKE MD VERIZON MARYLAND, INC.
410-874 ODENTON MD MCIMETRO, ATS, INC.
410-875 SYKESVILLE MD VERIZON MARYLAND, INC.
410-876 REISTERSTN MD VERIZON MARYLAND, INC.
410-877 FALLSTON MD VERIZON MARYLAND, INC.
410-878 BALTIMORE MD MCIMETRO, ATS, INC.
410-879 FORK MD VERIZON MARYLAND, INC.
410-880 WATERLO236 MD VERIZON MARYLAND, INC.
410-881 SHERWD FOR MD MCIMETRO, ATS, INC.
410-882 PARKVILLE MD VERIZON MARYLAND, INC.
410-883 SHARPTOWN MD VERIZON MARYLAND, INC.
410-884 COLUMBIA MD VERIZON MARYLAND, INC.
410-885 CHESAPKECY MD VERIZON MARYLAND, INC.
410-886 TILGHMAN MD VERIZON MARYLAND, INC.
410-887 TOWSON MD VERIZON MARYLAND, INC.
410-888 WATERLO236 MD VERIZON MARYLAND, INC.
410-889 BALTIMORE MD VERIZON MARYLAND, INC.
410-890 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-891 COCKEYSVL MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
410-892 GLENBURNIE MD VERIZON MARYLAND, INC.
410-893 FORK MD VERIZON MARYLAND, INC.
410-894 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-895 BALTIMORE MD VERIZON MARYLAND, INC.
410-896 DELMAR MD VERIZON MARYLAND, INC.
410-897 ANNAPOLIS MD VERIZON MARYLAND, INC.
410-898 WATERLO236 MD VERIZON MARYLAND, INC.
410-899 TOWSON MD ARCH WIRELESS HOLDINGS, INC.