Area Codes > 240 > Central Office Codes
Exchange | Rate Center | State | Operating Company |
---|---|---|---|
240-201 | RIDGE | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-205 | WSNGTNZN10 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-206 | WSNG236Z14 | MD | XO MARYLAND, LLC |
240-207 | DAMASCS236 | MD | CAVALIER EAST LLC - MD |
240-208 | LA PLATA | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-209 | INDIANHEAD | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-210 | WALDORF | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-211 | MD | ||
240-212 | OAKLAND | MD | CORE COMMUNICATIONS, INC. - MD |
240-213 | WALDORF | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-214 | MECHANCSVL | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-215 | FREDERICK | MD | TELCOVE OPERATIONS, INC. - MD |
240-216 | WALDORF | MD | NEXTEL COMMUNICATIONS, INC. |
240-217 | HAGERSTOWN | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-218 | NANJEMOY | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-219 | TOMPKINSVL | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-220 | POOLESVL | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-221 | WSNGTNZN11 | MD | VERIZON MARYLAND, INC. |
240-222 | WALDORF | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-223 | WSHNGTNZN2 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-225 | FREDERICK | MD | CORE COMMUNICATIONS, INC. - MD |
240-226 | MD | ||
240-227 | MD | ||
240-228 | WSNG236Z13 | MD | VERIZON MARYLAND, INC. |
240-229 | WALDORF | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-230 | HUGHESVL | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-231 | HAGERSTOWN | MD | CORE COMMUNICATIONS, INC. - MD |
240-232 | WSNG236Z14 | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-233 | TOMPKINSVL | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-234 | DAMASCS236 | MD | ARCH WIRELESS HOLDINGS, INC. |
240-235 | WSHNGTNZN2 | MD | PAETEC COMMUNICATIONS, INC. - MD |
240-236 | FREDERICK | MD | VERIZON MARYLAND, INC. |
240-237 | LXTNPKGRML | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-238 | WSNGTNZN10 | MD | PAETEC COMMUNICATIONS, INC. - MD |
240-239 | LEONARDTN | MD | CORE COMMUNICATIONS, INC. - MD |
240-240 | MD | ||
240-241 | WSNG236Z13 | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-242 | WSNGTNZN11 | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-243 | GAITHERSBG | MD | ALLEGIANCE TELECOM, INC. - MD |
240-244 | WSNGTNZN16 | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-245 | WSNG236Z14 | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-246 | GAITHERSBG | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-247 | WSHNGTNZN3 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-248 | RIDGE | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-249 | MECHANCSVL | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-250 | BRANDYWINE | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-251 | HIGHFIELD | MD | CORE COMMUNICATIONS, INC. - MD |
240-252 | GAITHERSBG | MD | LEVEL 3 COMMUNICATIONS, LLC - MD |
240-253 | WSHNGTNZN6 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-254 | HUGHESVL | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-255 | POOLESVL | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-256 | LEONARDTN | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-257 | NANJEMOY | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-258 | RIDGE | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-259 | MD | ||
240-260 | WSNG236Z14 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-261 | WSNGTNZN10 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-262 | DAMASCS236 | MD | TIDALWAVE TELEPHONE INC. |
240-263 | DAMASCS236 | MD | TIDALWAVE TELEPHONE INC. |
240-264 | LAUREL236 | MD | VERIZON MARYLAND, INC. |
240-265 | WSHNGTNZN5 | MD | TIDALWAVE TELEPHONE INC. |
240-266 | WSNG236Z14 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-267 | WSHNGTNZN5 | MD | TIDALWAVE TELEPHONE INC. |
240-268 | WSNGTNZN10 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-269 | WSNGTNZN16 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-270 | WSNG236Z14 | MD | TIDALWAVE TELEPHONE INC. |
240-271 | WSHNGTNZN2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-272 | WSNG236Z14 | MD | TIDALWAVE TELEPHONE INC. |
240-273 | WSHNGTNZN6 | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-274 | WSHNGTNZN2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-275 | GRANTSVL | MD | CORE COMMUNICATIONS, INC. - MD |
240-276 | WSNGTNZN10 | MD | VERIZON MARYLAND, INC. |
240-277 | WSHNGTNZN2 | MD | SPRINT SPECTRUM L.P. |
240-279 | WALDORF | MD | CORE COMMUNICATIONS, INC. - MD |
240-280 | LAUREL236 | MD | COMCAST BUSINESS COMMUNICATIONS, INC. - MD |
240-281 | WSHNGTNZN2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-282 | MECHANCSVL | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-283 | WSNGTNZN11 | MD | PAETEC COMMUNICATIONS, INC. - MD |
240-284 | FROSTBURG | MD | NATIONSLINE, INC.-MD |
240-285 | FREDERICK | MD | CAVALIER EAST LLC - MD |
240-286 | WSHNGTNZN2 | MD | NEXTEL COMMUNICATIONS, INC. |
240-287 | HANCOCK | MD | CORE COMMUNICATIONS, INC. - MD |
240-288 | THURMONT | MD | NATIONSLINE, INC.-MD |
240-289 | WSHNGTNZN6 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-290 | WSNGTNZN11 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-291 | HAGERSTOWN | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-292 | WSNGTNZN11 | MD | VERIZON MARYLAND, INC. |
240-293 | WSNGTNZN12 | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-294 | LAUREL236 | MD | XO MARYLAND, LLC |
240-295 | LAUREL236 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-296 | WSHNGTNZN4 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-297 | WSNG236Z13 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD |
240-298 | LEONARDTN | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-299 | WALDORF | MD | NEXTEL COMMUNICATIONS, INC. |
240-301 | MD | ||
240-303 | WSNGTNZN16 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-304 | WSHNGTNZN5 | MD | NEXTEL COMMUNICATIONS, INC. |
240-305 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-306 | GAITHERSBG | MD | ALLEGIANCE TELECOM, INC. - MD |
240-307 | EMMITSBURG | MD | AT&T LOCAL |