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
301-900 WSHNGTNZN2 876D 2015-02-18 Yes
301-901 WSNG236Z13 9212 — Yes
301-902 WSNG236Z13 9212 — Yes
301-903 WSNGTNZN10 9212 — —
301-904 LEONARDTN 6395 — —
301-905 WSHNGTNZN3 9212 — Yes
301-906 WSHNGTNZN2 4036 — —
301-907 WSHNGTNZN2 9212 — Yes
301-908 WSHNGTNZN3 6395 — —
301-909 WSHNGTNZN5 7229 — Yes
301-910 WSHNGTNZN2 4036 — —
301-911 XXXXXXXXXX MULT — —
301-912 WSNG238Z14 9212 — Yes
301-913 WSHNGTNZN2 9212 — Yes
301-914 OAKLAND 676A 2012-12-27 Yes
301-915 WSHNGTNZN2 8832 — Yes
301-916 GAITHERSBG 9212 — —
301-917 WSNGTNZN10 8832 — Yes
301-918 WSHNGTNZN4 9212 — Yes
301-919 WSHNGTNZN2 4036 — —
301-920 WSHNGTNZN3 8832 — Yes
301-921 WSNGTNZN10 9212 — Yes
301-922 WSHNGTNZN3 6395 — —
301-923 WSNG236Z13 071F — Yes
301-924 WSNGTNZN12 9212 — —
301-925 WSHNGTNZN5 9212 — —
301-926 GAITHERSBG 9212 — —
301-927 WSHNGTNZN4 9212 — —
301-928 WSHNGTNZN3 6395 — —
301-929 WSNGTNZN11 9212 — —
301-930 WSHNGTNZN3 9212 — —
301-931 WSNG236Z13 9212 — Yes
301-932 WALDORF 9212 — —
301-933 WSNGTNZN11 9212 — —
301-934 LA PLATA 9212 — —
301-935 WSNG236Z13 9212 — Yes
301-936 HAGERSTOWN 073H 2017-06-02 Yes
301-937 WSNG236Z13 9212 — —
301-938 WSHNGTNZN3 6395 — —
301-939 WSNG236Z13 9212 — Yes
301-940 WSHNGTNZN5 9212 — —
301-941 WSHNGTNZN2 9212 — Yes
301-942 WSNGTNZN11 9212 — —
301-943 WSHNGTNZN3 6395 — —
301-944 GAITHERSBG 7229 — Yes
301-945 WSNGTNZN11 7229 — Yes
301-946 WSNGTNZN11 9212 — —
301-947 GAITHERSBG 9212 — —
301-948 WSNGTNZN10 9212 — —
301-949 WSNGTNZN11 9212 — —
301-950 — —
301-951 WSHNGTNZN2 9212 — —
301-952 WSNG236Z15 9212 — —
301-953 WSNG236Z13 9212 — Yes
301-954 WSHNGTNZN4 9212 — —
301-955 WSHNGTNZN4 7229 — Yes
301-956 GAITHERSBG 9212 2002-05-22 Yes
301-957 LAUREL236 7229 — Yes
301-958 — —
301-959 — —
301-960 WSHNGTNZN3 7229 — Yes
301-961 WSHNGTNZN2 9212 — —
301-962 WSNGTNZN11 9212 — Yes
301-963 GAITHERSBG 9212 — —
301-964 MYERSVILLE 4036 — Yes
301-965 WSHNGTNZN6 7229 — Yes
301-966 WSNGTNZN12 7229 — Yes
301-967 WSHNGTNZN5 9212 — —
301-968 WSHNGTNZN2 7229 — Yes
301-969 BRUNSWICK 318J 2007-03-06 Yes
301-970 WSNG238Z14 9212 — Yes
301-971 WSHNGTNZN6 8832 — Yes
301-972 GAITHERSBG 9212 — —
301-973 WSNG238Z14 071F — Yes
301-974 LAUREL236 8832 — Yes
301-975 WSNGTNZN10 9212 — Yes
301-976 XXXXXXXXXX MULT — —
301-977 GAITHERSBG 9212 — —
301-978 WSNGTNZN10 9212 — Yes
301-979 WSNGTNZN10 6855 — Yes
301-980 WSHNGTNZN3 6395 — —
301-981 WSHNGTNZN5 7591 — —
301-982 WSNG236Z13 9212 — —
301-983 WSNGTNZN10 9212 — —
301-984 WSNGTNZN11 9212 — —
301-985 WSHNGTNZN4 9212 — Yes
301-986 WSHNGTNZN2 9212 — —
301-987 GAITHERSBG 9212 — —
301-988 HAGERSTOWN 4720 — Yes
301-989 WSNGTNZN12 9212 — —
301-990 GAITHERSBG 9212 — —
301-991 HAGERSTOWN 6855 — Yes
301-992 HAGERSTOWN 5562 — Yes
301-993 WSNG236Z13 9212 — —
301-994 LXTNPKGRML 9212 — Yes
301-995 LXTNPKGRML 9212 — —
301-996 WSHNGTNZN3 6855 — Yes
301-997 LEONARDTN 9212 — Yes
301-998 WSNGTNZN11 9212 — —
301-999 HAGERSTOWN 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.