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Area Codes > 301 > Central Office Codes

Exchange Rate Center State Operating Company
301-704 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-705 WALDORF MD VERIZON MARYLAND, INC.
301-706 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-707 CUMBERLAND MD USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD
301-708 WSNG236Z13 MD ARCH WIRELESS HOLDINGS, INC.
301-709 WSNG236Z13 MD ARCH WIRELESS HOLDINGS, INC.
301-710 WALDORF MD LEVEL 3 COMMUNICATIONS, LLC - MD
301-711 MD
301-712 FREDERICK MD MCIMETRO, ATS, INC.
301-713 WSHNGTNZN3 MD VERIZON MARYLAND, INC.
301-714 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-715 WSNG236Z15 MD TELEPORT COMMUNICATIONS GROUP, INC. - DC
301-716 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-717 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-718 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-719 WSNGTNZN16 MD TELEPORT COMMUNICATIONS GROUP, INC. - DC
301-720 BRANDYWINE MD TELEPORT COMMUNICATIONS GROUP, INC. - DC
301-721 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-722 CUMBERLAND MD VERIZON MARYLAND, INC.
301-723 CUMBERLAND MD VERIZON MARYLAND, INC.
301-724 CUMBERLAND MD VERIZON MARYLAND, INC.
301-725 LAUREL236 MD VERIZON MARYLAND, INC.
301-726 MD
301-727 WSHNGTNZN5 MD BALTIMORE-WASHINGTON TELEPHONE BWT
301-728 WSHNGTNZN3 MD OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
301-729 CUMBERLAND MD VERIZON MARYLAND, INC.
301-730 MYERSVILLE MD DOBSON CELLULAR SYSTEMS, INC.
301-731 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-732 WSNG236Z13 MD ARCH WIRELESS HOLDINGS, INC.
301-733 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-734 WSHNGTNZN3 MD VERIZON MARYLAND, INC.
301-735 WSHNGTNZN5 MD VERIZON MARYLAND, INC.
301-736 WSHNGTNZN5 MD VERIZON MARYLAND, INC.
301-737 LXTNPKGRML MD VERIZON MARYLAND, INC.
301-738 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-739 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-740 GAITHERSBG MD VERIZON MARYLAND, INC.
301-741 LAUREL236 MD LEVEL 3 COMMUNICATIONS, LLC - MD
301-742 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-743 INDIANHEAD MD VERIZON MARYLAND, INC.
301-744 INDIANHEAD MD VERIZON MARYLAND, INC.
301-745 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-746 FRIENDSVL MD VERIZON MARYLAND, INC.
301-747 WSHNGTNZN6 MD TELEPORT COMMUNICATIONS GROUP, INC. - DC
301-748 FREDERICK MD NEXTEL COMMUNICATIONS, INC.
301-749 WSHNGTNZN6 MD VERIZON MARYLAND, INC.
301-750 FRIENDSVL MD CORE COMMUNICATIONS, INC. - MD
301-751 WALDORF MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-752 WALDORF MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-753 WSHNGTNZN6 MD VERIZON MARYLAND, INC.
301-754 WSHNGTNZN3 MD VERIZON MARYLAND, INC.
301-755 WSHNGTNZN3 MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
301-756 WSNG236Z14 MD XSPEDIUS MANAGEMENT CO SWITCHES SERVICES, LLC - MD
301-757 LXTNPKGRML MD VERIZON MARYLAND, INC.
301-758 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-759 CUMBERLAND MD VERIZON MARYLAND, INC.
301-760 WSHNGTNZN2 MD LEVEL 3 COMMUNICATIONS, LLC - MD
301-761 WSNGTNZN11 MD LEVEL 3 COMMUNICATIONS, LLC - MD
301-762 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-763 WSHNGTNZN5 MD VERIZON MARYLAND, INC.
301-764 WALDORF MD VERIZON MARYLAND, INC.
301-765 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-766 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-767 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-768 WSHNGTNZN3 MD LEVEL 3 COMMUNICATIONS, LLC - MD
301-769 LEONARDTN MD VERIZON MARYLAND, INC.
301-770 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-771 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-772 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-773 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-774 ASHTON236 MD VERIZON MARYLAND, INC.
301-775 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-776 LAUREL236 MD VERIZON MARYLAND, INC.
301-777 CUMBERLAND MD VERIZON MARYLAND, INC.
301-778 WSHNGTNZN5 MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
301-779 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-780 WSNG236Z15 MD VERIZON MARYLAND, INC.
301-781 FROSTBURG MD NEW FRONTIERS TELECOMMUNICATIONS, INC.
301-782 BRANDYWINE MD VERIZON MARYLAND, INC.
301-783 CUMBERLAND MD NEW FRONTIERS TELECOMMUNICATIONS, INC.
301-784 CUMBERLAND MD VERIZON MARYLAND, INC.
301-785 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-786 MCCOOLE MD VERIZON MARYLAND, INC.
301-787 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-788 FREDERICK MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-789 WSHNGTNZN4 MD CORE COMMUNICATIONS, INC. - PA
301-790 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-791 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-792 WSHNGTNZN3 MD OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
301-793 WSHNGTNZN3 MD OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
301-794 WSNG236Z14 MD VERIZON MARYLAND, INC.
301-795 WSNGTNZN10 MD MCIMETRO, ATS, INC.
301-796 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-797 HAGERSTOWN MD VERIZON MARYLAND, INC.
301-798 DAMASCS240 MD VERIZON MARYLAND, INC.
301-799 KEEDYSVL MD CORE COMMUNICATIONS, INC. - MD
301-801 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-802 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-803 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-804 ASHTON236 MD MCIMETRO, ATS, INC.