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Area Codes > 301 > Central Office Codes

Exchange Rate Center State Operating Company
301-201 MD
301-203 WSHNGTNZN6 MD VERIZON MARYLAND, INC.
301-204 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-205 WSNG238Z14 MD VERIZON MARYLAND, INC.
301-206 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-207 WSNG236Z13 MD ARCH WIRELESS HOLDINGS, INC.
301-208 GAITHERSBG MD VERIZON MARYLAND, INC.
301-209 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-210 LAUREL236 MD VERIZON MARYLAND, INC.
301-211 MD
301-212 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-213 WSHNGTNZN3 MD SPRINT SPECTRUM L.P.
301-214 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-215 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-216 GAITHERSBG MD VERIZON MARYLAND, INC.
301-217 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-218 WSNG236Z14 MD VERIZON MARYLAND, INC.
301-219 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-220 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-221 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-222 WSHNGTNZN2 MD CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD
301-223 WILLIAMSPT MD VERIZON MARYLAND, INC.
301-224 WSHNGTNZN2 MD ARCH WIRELESS HOLDINGS, INC.
301-225 WSNG236Z13 MD GEOTEK COMMUNICATIONS, INC.
301-226 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-227 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-228 FREDERICK MD VERIZON MARYLAND, INC.
301-229 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-230 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-231 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-232 ASHTON236 MD MCIMETRO, ATS, INC.
301-233 WSHNGTNZN3 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-234 WSNGTNZN16 MD VERIZON MARYLAND, INC.
301-235 WSNGTNZN16 MD MCIMETRO, ATS, INC.
301-236 WSNGTNZN12 MD VERIZON MARYLAND, INC.
301-237 WSHNGTNZN3 MD SPRINT SPECTRUM L.P.
301-238 WSNGTNZN16 MD VERIZON MARYLAND, INC.
301-239 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-240 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-241 HIGHFIELD MD VERIZON MARYLAND, INC.
301-242 BRANDYWINE MD MCIMETRO, ATS, INC.
301-243 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-244 WSHNGTNZN3 MD TELCOVE OPERATIONS, INC. - MD
301-245 BITTINGER MD VERIZON MARYLAND, INC.
301-246 NANJEMOY MD VERIZON MARYLAND, INC.
301-247 LEONARDTN MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-248 WSHNGTNZN6 MD VERIZON MARYLAND, INC.
301-249 WSNG236Z14 MD VERIZON MARYLAND, INC.
301-250 GAITHERSBG MD MCIMETRO, ATS, INC.
301-251 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-252 GAITHERSBG MD NEXTEL COMMUNICATIONS, INC.
301-253 DAMASCS236 MD VERIZON MARYLAND, INC.
301-254 WSHNGTNZN3 MD SPRINT SPECTRUM L.P.
301-255 WSNGTNZN11 MD VERIZON MARYLAND, INC.
301-256 LAUREL236 MD MCIMETRO, ATS, INC.
301-257 WSHNGTNZN3 MD SPRINT SPECTRUM L.P.
301-258 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-259 TOMPKINSVL MD VERIZON MARYLAND, INC.
301-260 ASHTON236 MD VERIZON MARYLAND, INC.
301-261 WSNG238Z14 MD VERIZON MARYLAND, INC.
301-262 WSNG236Z14 MD VERIZON MARYLAND, INC.
301-263 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-264 MT SAVAGE MD VERIZON MARYLAND, INC.
301-265 WSHNGTNZN6 MD VERIZON MARYLAND, INC.
301-266 WALDORF MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-267 WSNG236Z13 MD ARCH WIRELESS HOLDINGS, INC.
301-268 CUMBERLAND MD USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD
301-269 DAMASCS236 MD ARCH WIRELESS HOLDINGS, INC.
301-270 WSHNGTNZN3 MD VERIZON MARYLAND, INC.
301-271 THURMONT MD VERIZON MARYLAND, INC.
301-272 WSHNGTNZN2 MD MCIMETRO, ATS, INC.
301-273 WSHNGTNZN3 MD MCIMETRO, ATS, INC.
301-274 HUGHESVL MD VERIZON MARYLAND, INC.
301-275 WSHNGTNZN2 MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-276 WSHNGTNZN4 MD MCIMETRO, ATS, INC.
301-277 WSHNGTNZN4 MD VERIZON MARYLAND, INC.
301-278 WSHNGTNZN5 MD MCIMETRO, ATS, INC.
301-279 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-280 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-281 WSHNGTNZN6 MD MCIMETRO, ATS, INC.
301-282 WSNGTNZN12 MD VERIZON MARYLAND, INC.
301-283 WSHNGTNZN6 MD VERIZON MARYLAND, INC.
301-284 WSNGTNZN10 MD MCIMETRO, ATS, INC.
301-285 WSHNGTNZN3 MD VERIZON MARYLAND, INC.
301-286 WSNG236Z13 MD VERIZON MARYLAND, INC.
301-287 WSNGTNZN11 MD MCIMETRO, ATS, INC.
301-288 WSNGTNZN12 MD MCIMETRO, ATS, INC.
301-289 WSNG236Z13 MD MCIMETRO, ATS, INC.
301-290 MECHANCSVL MD VERIZON MARYLAND, INC.
301-291 WSNG236Z14 MD MCIMETRO, ATS, INC.
301-292 WSHNGTNZN6 MD VERIZON MARYLAND, INC.
301-293 MYERSVILLE MD VERIZON MARYLAND, INC.
301-294 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-295 WSHNGTNZN2 MD VERIZON MARYLAND, INC.
301-296 WSNGTNZN10 MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
301-297 WSNGTNZN16 MD VERIZON MARYLAND, INC.
301-298 WSNG236Z15 MD MCIMETRO, ATS, INC.
301-299 WSNGTNZN10 MD VERIZON MARYLAND, INC.
301-300 WSHNGTNZN2 MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-301 MD