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Area Codes > 301 > Central Office Codes

Exchange Rate Center State Operating Company
301-905 WSHNGTNZN3 MD VERIZON MARYLAND, INC.
301-906 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-907 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-908 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-909 WSHNGTNZN5 MD MCIMETRO, ATS, INC.
301-910 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-911 MD
301-912 WSNG238Z14 MD VERIZON MARYLAND, INC.
301-913 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-914 WSNG236Z13 MD ARCH WIRELESS HOLDINGS, INC.
301-915 WSHNGTNZN2 MD STARPOWER COMMUNICATIONS, LLC - MD
301-916 GAITHERSBG MD VERIZON MARYLAND, INC.
301-917 WSNGTNZN10 MD STARPOWER COMMUNICATIONS, LLC - MD
301-918 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-919 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-920 WSHNGTNZN3 MD STARPOWER COMMUNICATIONS, LLC - MD
301-921 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-922 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-923 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-924 WSNGTNZN12 MD VERIZON MARYLAND, INC.
301-925 WSHNGTNZN5 MD VERIZON MARYLAND, INC.
301-926 GAITHERSBG MD VERIZON MARYLAND, INC.
301-927 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-928 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-929 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-930 WSHNGTNZN3 MD VERIZON MARYLAND, INC.
301-931 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-932 WALDORF MD VERIZON MARYLAND, INC.
301-933 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-934 LA PLATA MD VERIZON MARYLAND, INC.
301-935 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-936 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-937 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-938 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-939 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-940 ASHTON236 MD VERIZON MARYLAND, INC.
301-941 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-942 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-943 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-944 GAITHERSBG MD MCIMETRO, ATS, INC.
301-945 WSNGTNZN11 MD MCIMETRO, ATS, INC.
301-946 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-947 GAITHERSBG MD VERIZON MARYLAND, INC.
301-948 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-949 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-950 MD
301-951 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-952 WSNG236Z15 MD VERIZON MARYLAND, INC.
301-953 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-954 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-955 WSHNGTNZN4 MD MCIMETRO, ATS, INC.
301-956 GAITHERSBG MD VERIZON MARYLAND, INC.
301-957 LAUREL236 MD MCIMETRO, ATS, INC.
301-958 MD
301-959 MD
301-960 WSHNGTNZN3 MD MCIMETRO, ATS, INC.
301-961 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-962 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-963 GAITHERSBG MD VERIZON MARYLAND, INC.
301-964 MYERSVILLE MD DOBSON CELLULAR SYSTEMS, INC.
301-965 WSHNGTNZN6 MD MCIMETRO, ATS, INC.
301-966 WSNGTNZN12 MD MCIMETRO, ATS, INC.
301-967 WSHNGTNZN5 MD VERIZON MARYLAND, INC.
301-968 WSHNGTNZN2 MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
301-969 BRUNSWICK MD COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
301-970 WSNG238Z14 MD VERIZON MARYLAND, INC.
301-971 WSHNGTNZN6 MD STARPOWER COMMUNICATIONS, LLC - MD
301-972 GAITHERSBG MD VERIZON MARYLAND, INC.
301-973 WSNG238Z14 MD VERIZON MARYLAND, INC.
301-974 LAUREL236 MD STARPOWER COMMUNICATIONS, LLC - MD
301-975 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-976 WSHNGTNZN5 MD BALTIMORE-WASHINGTON TELEPHONE BWT
301-977 GAITHERSBG MD VERIZON MARYLAND, INC.
301-978 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-979 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-980 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-981 WSHNGTNZN5 MD BROADWING COMMUNICATIONS. LLC - MD
301-982 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-983 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-984 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-985 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-986 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-987 GAITHERSBG MD VERIZON MARYLAND, INC.
301-988 HAGERSTOWN MD USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD
301-989 WSNGTNZN12 MD VERIZON MARYLAND, INC.
301-990 GAITHERSBG MD VERIZON MARYLAND, INC.
301-991 HAGERSTOWN MD SPRINT SPECTRUM L.P. - MD
301-992 HAGERSTOWN MD SPRINT SPECTRUM L.P. - MD
301-993 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-994 LXTNPKGRML MD VERIZON MARYLAND, INC.
301-995 LXTNPKGRML MD VERIZON MARYLAND, INC.
301-996 WSHNGTNZN3 MD SPRINT SPECTRUM L.P.
301-997 LEONARDTN MD VERIZON MARYLAND, INC.
301-998 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-999 HAGERSTOWN MD VERIZON MARYLAND, INC.