All assignees
800 prefixes in 240 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 240-200 | WSHNGTNZN2 | 071F | 2010-10-04 | Yes |
| 240-201 | RIDGE | 568G | — | Yes |
| 240-202 | HIGHFIELD | 876D | 2020-05-28 | Yes |
| 240-203 | HAGERSTOWN | 6855 | 2011-10-04 | Yes |
| 240-204 | WSHNGTNZN2 | 6395 | 2011-09-07 | Yes |
| 240-205 | WSNGTNZN10 | 4036 | 2003-07-23 | Yes |
| 240-206 | WSNG236Z14 | 7229 | — | Yes |
| 240-207 | DAMASCS236 | 829J | — | Yes |
| 240-208 | LA PLATA | 568G | — | Yes |
| 240-209 | INDIANHEAD | 568G | — | Yes |
| 240-210 | WALDORF | 4036 | — | Yes |
| 240-211 | XXXXXXXXXX | MULT | — | — |
| 240-212 | OAKLAND | 2593 | — | — |
| 240-213 | WALDORF | 568G | — | Yes |
| 240-214 | MECHANCSVL | 568G | — | Yes |
| 240-215 | FREDERICK | 6119 | — | Yes |
| 240-216 | WALDORF | 5562 | 2001-03-15 | Yes |
| 240-217 | HAGERSTOWN | 6855 | 2001-04-16 | Yes |
| 240-218 | NANJEMOY | 568G | — | Yes |
| 240-219 | RIDGE | 568G | 2014-09-22 | Yes |
| 240-220 | POOLESVL | 568G | — | Yes |
| 240-221 | WSNGTNZN11 | 9212 | — | Yes |
| 240-222 | WALDORF | 829J | — | Yes |
| 240-223 | WSHNGTNZN2 | 7229 | — | Yes |
| 240-224 | GAITHERSBG | 6395 | 2012-09-10 | Yes |
| 240-225 | FREDERICK | 2593 | — | — |
| 240-226 | OAKLAND | 876D | 2020-07-16 | Yes |
| 240-227 | MYERSVILLE | 4036 | 2023-07-25 | Yes |
| 240-228 | WSNG236Z13 | 9212 | — | Yes |
| 240-229 | WALDORF | 6119 | — | Yes |
| 240-230 | HUGHESVL | 6119 | — | Yes |
| 240-231 | HAGERSTOWN | 2593 | — | — |
| 240-232 | WSNG236Z14 | 6119 | — | Yes |
| 240-233 | TOMPKINSVL | 7529 | — | Yes |
| 240-234 | WSHNGTNZN2 | 6395 | 2011-10-04 | Yes |
| 240-235 | WSHNGTNZN2 | 829J | — | — |
| 240-236 | FREDERICK | 9212 | — | Yes |
| 240-237 | LXTNPKGRML | 7529 | — | Yes |
| 240-238 | WSNGTNZN10 | 829J | — | — |
| 240-239 | LEONARDTN | 2593 | — | — |
| 240-240 | DAMASCS240 | 965H | 2020-07-02 | Yes |
| 240-241 | WSNG236Z13 | 8832 | — | Yes |
| 240-242 | WSNGTNZN11 | 8832 | — | Yes |
| 240-243 | GAITHERSBG | 7229 | — | Yes |
| 240-244 | WSNGTNZN16 | 8832 | — | Yes |
| 240-245 | WSNG236Z14 | 8832 | — | Yes |
| 240-246 | GAITHERSBG | 8832 | — | Yes |
| 240-247 | WSHNGTNZN3 | 7229 | — | Yes |
| 240-248 | RIDGE | 568G | — | Yes |
| 240-249 | MECHANCSVL | 7529 | — | Yes |
| 240-250 | BRANDYWINE | 568G | — | Yes |
| 240-251 | HIGHFIELD | 2593 | — | — |
| 240-252 | GAITHERSBG | 6119 | — | Yes |
| 240-253 | WSHNGTNZN6 | 071F | — | Yes |
| 240-254 | HUGHESVL | 7529 | — | Yes |
| 240-255 | POOLESVL | 568G | — | Yes |
| 240-256 | LEONARDTN | 7529 | — | Yes |
| 240-257 | NANJEMOY | 7529 | — | Yes |
| 240-258 | RIDGE | 7529 | — | Yes |
| 240-259 | HUGHESVL | 624H | 2021-04-22 | Yes |
| 240-260 | WSNG236Z14 | 7229 | — | Yes |
| 240-261 | GAITHERSBG | 876D | 2015-12-23 | Yes |
| 240-262 | LXTNPKGRML | 318J | — | Yes |
| 240-263 | WSHNGTNZN2 | 4036 | — | Yes |
| 240-264 | LAUREL236 | 9212 | — | Yes |
| 240-265 | WSHNGTNZN2 | 6855 | 2011-11-10 | Yes |
| 240-266 | WSNG236Z14 | 568G | — | Yes |
| 240-267 | HAGERSTOWN | 6395 | 2017-05-18 | Yes |
| 240-268 | WSNGTNZN10 | 7229 | — | Yes |
| 240-269 | WSNGTNZN16 | 568G | — | Yes |
| 240-270 | WALDORF | 6395 | 2011-11-07 | Yes |
| 240-271 | WSHNGTNZN2 | 4036 | — | — |
| 240-272 | WSHNGTNZN2 | 6855 | 2011-11-10 | Yes |
| 240-273 | WSHNGTNZN6 | 6119 | — | Yes |
| 240-274 | WSHNGTNZN2 | 4036 | — | — |
| 240-275 | GRANTSVL | 2593 | — | — |
| 240-276 | WSNGTNZN10 | 9212 | 2004-05-04 | Yes |
| 240-277 | WSHNGTNZN2 | 6855 | 2002-10-18 | Yes |
| 240-278 | LAUREL236 | 6395 | 2011-07-08 | Yes |
| 240-279 | WALDORF | 2593 | — | — |
| 240-280 | LAUREL236 | 318J | — | Yes |
| 240-281 | WSHNGTNZN2 | 4036 | — | Yes |
| 240-282 | MECHANCSVL | 568G | — | Yes |
| 240-283 | WSNGTNZN11 | 829J | — | Yes |
| 240-284 | FROSTBURG | 6119 | 2004-11-01 | Yes |
| 240-285 | FREDERICK | 6395 | — | Yes |
| 240-286 | WSHNGTNZN2 | 6855 | 2002-09-17 | Yes |
| 240-287 | HANCOCK | 2593 | — | — |
| 240-288 | THURMONT | 318J | 2004-11-01 | Yes |
| 240-289 | WSHNGTNZN6 | 829J | — | Yes |
| 240-290 | WSNGTNZN11 | 7229 | — | Yes |
| 240-291 | HAGERSTOWN | 4036 | 2002-10-15 | Yes |
| 240-292 | WSNGTNZN11 | 9212 | — | Yes |
| 240-293 | WSNGTNZN12 | 8832 | — | Yes |
| 240-294 | LAUREL236 | 7229 | — | Yes |
| 240-295 | LAUREL236 | 829J | — | Yes |
| 240-296 | WSHNGTNZN4 | 829J | — | Yes |
| 240-297 | WSNG236Z13 | 6119 | — | Yes |
| 240-298 | LEONARDTN | 6395 | — | — |
| 240-299 | WALDORF | 5562 | — | Yes |
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.