| 240-751 | Beltsville | Telcove Operations, Inc. - Md |
| 240-752 | Washington | Telcove Operations, Inc. - Md |
| 240-753 | Annapolis Junction | Telcove Operations, Inc. - Md |
| 240-754 | McLean | Level 3 Communications, Llc - Md |
| 240-755 | Baltimore | Comcast Phone Of Northern Maryland, Inc. - Md |
| 240-762 | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 240-764 | Washington | Xo Maryland, Llc |
| 240-765 | Washington | Xo Maryland, Llc |
| 240-766 | Washington | Xo Maryland, Llc |
| 240-767 | Washington | Cavalier East Llc - Md |
| 240-770 | Manassas | Comcast Phone Of Northern Maryland, Inc. - Md |
| 240-772 | Frederick | Cellco Partnership Dba Verizon Wireless - Md |
| 240-773 | Rockville | Verizon Maryland, Inc. |
| 240-776 | Washington | Broadwing Communications. Llc - Md |
| 240-777 | Rockville | Verizon Maryland, Inc. |
| 240-778 | Annapolis Junction | Xo Maryland, Llc |
| 240-779 | Beltsville | Cavalier East Llc - Md |
| 240-780 | Washington | Broadwing Communications. Llc - Md |
| 240-782 | | Global Crossing Local Services, Inc.-md |
| 240-783 | Alexandria | Mte, Inc. Dba Mte Paging Network |
| 240-784 | Frederick | Omnipoint Communications Cap Operations, Llc |
| 240-786 | Washington | Broadwing Communications. Llc - Md |
| 240-787 | Washington | Broadwing Communications. Llc - Md |
| 240-788 | Washington | Broadwing Communications. Llc - Md |
| 240-790 | Washington | Broadwing Communications. Llc - Md |
| 240-793 | Washington | Sprint Spectrum L.p. |
| 240-794 | Washington | Broadwing Communications. Llc - Md |
| 240-800 | Chevy Chase | Core Communications, Inc. - Md |
| 240-801 | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 240-802 | Chevy Chase | 365 Wireless, Llc |
| 240-803 | Hagerstown | New Cingular Wireless Pcs, Llc - Dc |
| 240-812 | Washington | Global Crossing Local Services, Inc.-md |
| 240-813 | Washington | Atx Telecommunications Services, Ltd |
| 240-818 | Frederick | Verizon Maryland, Inc. |
| 240-821 | Beltsville | Lightwave Communications, Llc - Md |
| 240-823 | Washington | Xo Maryland, Llc |
| 240-832 | Washington | Sprint Spectrum L.p. |
| 240-833 | Washington | Xo Maryland, Llc |
| 240-837 | Washington | Xo Maryland, Llc |
| 240-838 | Beltsville | Omnipoint Communications Cap Operations, Llc |
| 240-839 | Hyattsville | Cellco Partnership Dba Verizon Wireless - Md |
| 240-841 | Baltimore | Allegiance Telecom, Inc. - Md |
| 240-845 | Washington | Xo Maryland, Llc |
| 240-846 | Washington | Xo Maryland, Llc |
| 240-848 | Washington | Sprint Spectrum L.p. |
| 240-855 | Washington | Sprint Spectrum L.p. |
| 240-857 | Laurel | Level 3 Telecom Of Maryland, Llc - Md |
| 240-863 | Washington | Level 3 Telecom Of Maryland, Llc - Md |
| 240-865 | Baltimore | Level 3 Communications, Llc - Md |
| 240-868 | Washington | Cavalier East Llc - Md |
| 240-876 | Washington | Sprint Spectrum L.p. |
| 240-880 | Washington | Broadwing Communications. Llc - Md |
| 240-882 | Washington | Sprint Spectrum L.p. |
| 240-883 | Washington | Broadwing Communications. Llc - Md |
| 240-888 | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 240-892 | Washington | Broadwing Communications. Llc - Md |
| 240-893 | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 240-895 | Lexington Park | Verizon Maryland, Inc. |
| 240-897 | Washington | Broadwing Communications. Llc - Md |
| 240-898 | Washington | Broadwing Communications. Llc - Md |
| 240-899 | Beltsville | Omnipoint Communications Cap Operations, Llc |
| 240-903 | Washington | Comcast Phone Of Northern Maryland, Inc. - Md |
| 240-912 | McLean | Us Lec Of Maryland, Inc. |
| 240-920 | Monrovia | Level 3 Communications, Llc - Md |
| 240-925 | Washington | Cellco Partnership Dba Verizon Wireless - Md |
| 240-929 | Washington | Cavalier East Llc - Md |
| 240-938 | Beltsville | Omnipoint Communications Cap Operations, Llc |
| 240-949 | Washington | Cavalier East Llc - Md |
| 240-965 | Chevy Chase | Paetec Communications, Inc. - Md |
| 240-979 | Frederick | Level 3 Communications, Llc - Md |
| 240-988 | Washington | Sprint Spectrum L.p. |
| 240-993 | Washington | Xo Maryland, Llc |
| 240-994 | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 240-997 | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |