NRNumberResearch Membership · Data 09/17/2026

← Area code 301

All assignees

800 prefixes in 301 · initial assignments from the NANPA CO code file, 09/17/2026

Prefixes held by all assignees in area code 301
NPA-NXXRate centerOCNAssignedPooled
301-800 HAGERSTOWN 6855 — Yes
301-801 WSHNGTNZN3 6395 — —
301-802 WSHNGTNZN3 6395 — —
301-803 WSHNGTNZN2 9212 — Yes
301-804 ASHTON236 7229 — Yes
301-805 WSNG236Z14 9212 — —
301-806 WSHNGTNZN3 6855 — Yes
301-807 WSHNGTNZN3 6395 — —
301-808 WSHNGTNZN5 9212 — —
301-809 WSNG236Z14 9212 — Yes
301-810 BUCKEYSTN 624H — Yes
301-811 XXXXXXXXXX MULT — —
301-812 WSNG238Z15 9212 — Yes
301-813 WSHNGTNZN2 8697 — —
301-814 WSHNGTNZN2 4036 — —
301-815 FREDERICK 9212 — —
301-816 WSNGTNZN11 9212 — —
301-817 WSHNGTNZN5 9212 — —
301-818 WALDORF 071F — —
301-819 WSHNGTNZN3 9212 — —
301-820 GAITHERSBG 7529 — Yes
301-821 LAUREL236 7529 — Yes
301-822 WSNGTNZN11 7229 — Yes
301-823 WSNG236Z13 7529 — Yes
301-824 SMITHSBURG 9212 — Yes
301-825 WSNGTNZN10 7421 — Yes
301-826 LXTNPKGRML 9212 — —
301-827 WSHNGTNZN2 9212 — —
301-828 WSHNGTNZN2 7529 — Yes
301-829 MOUNT AIRY 9212 — Yes
301-830 WSHNGTNZN3 7325 — Yes
301-831 DAMASCS240 9212 — —
301-832 WSHNGTNZN4 7529 — Yes
301-833 WSNG236Z14 7529 — Yes
301-834 BRUNSWICK 9212 — Yes
301-835 FREDERICK 197D 2018-11-27 Yes
301-836 WSHNGTNZN5 9212 — Yes
301-837 WSNG236Z13 7229 — Yes
301-838 WSNGTNZN10 9212 — Yes
301-839 WSHNGTNZN6 9212 — —
301-840 WSNGTNZN10 9212 — —
301-841 WSHNGTNZN2 7229 — Yes
301-842 CLEAR SPG 9212 — Yes
301-843 WSHNGTNZN6 9212 — —
301-844 WSHNGTNZN3 6855 2011-10-04 Yes
301-845 WALKERSVL 9212 — Yes
301-846 FREDERICK 9212 — Yes
301-847 WSNGTNZN12 9212 — Yes
301-848 WALDORF 6395 — —
301-849 OAKLAND 071F — —
301-850 WSNG236Z14 6119 — Yes
301-851 WSHNGTNZN4 9212 — Yes
301-852 WSHNGTNZN4 9212 — Yes
301-853 WSHNGTNZN4 9212 — —
301-854 ASHTON238 9212 — Yes
301-855 WSNG238Z15 9212 — —
301-856 WSNGTNZN16 9212 — —
301-857 CLEAR SPG 2593 2002-07-12 Yes
301-858 WSNG238Z14 9212 — —
301-859 OAKLAND 6119 2002-01-09 Yes
301-860 WSNG236Z14 9212 — Yes
301-861 WALDORF 6119 — Yes
301-862 LXTNPKGRML 9212 — Yes
301-863 LXTNPKGRML 9212 — —
301-864 WSHNGTNZN4 9212 — —
301-865 NEW MARKET 9212 — —
301-866 LXTNPKGRML 9212 — Yes
301-867 WSNG236Z14 7229 — Yes
301-868 WSNGTNZN16 9212 — —
301-869 GAITHERSBG 9212 — —
301-870 WSHNGTNZN6 9212 — —
301-871 WSNGTNZN11 9212 — —
301-872 RIDGE 9212 — Yes
301-873 WSHNGTNZN3 6395 — —
301-874 BUCKEYSTN 9212 — —
301-875 LAUREL236 6395 — Yes
301-876 CUMBERLAND 6119 2002-05-02 Yes
301-877 WSNGTNZN16 9212 — —
301-878 BALTIMORE 7228 — —
301-879 WSNGTNZN12 9212 — —
301-880 LXTNPKGRML 6119 — Yes
301-881 WSNGTNZN11 9212 — —
301-882 NEW MARKET 2593 2004-03-18 Yes
301-883 WSHNGTNZN5 9212 — Yes
301-884 MECHANCSVL 9212 — —
301-885 WALDORF 9212 — Yes
301-886 WSNG236Z13 071F — Yes
301-887 WSHNGTNZN4 9212 — Yes
301-888 WSNGTNZN16 9212 — Yes
301-889 WSNG238Z14 9212 — Yes
301-890 WSNGTNZN12 9212 — —
301-891 WSHNGTNZN3 9212 — Yes
301-892 WSHNGTNZN4 9212 2005-03-11 Yes
301-893 WSHNGTNZN6 9212 — Yes
301-894 WSHNGTNZN6 9212 — —
301-895 GRANTSVL 9212 — Yes
301-896 WSHNGTNZN2 9212 — —
301-897 WSHNGTNZN2 9212 — —
301-898 FREDERICK 9212 — Yes
301-899 WSHNGTNZN5 9212 — —

These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.