All assignees
152 prefixes in 227 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 227-200 | WSHNGTNZN2 | 4036 | 2023-08-04 | Yes |
| 227-201 | MYERSVILLE | 4036 | 2023-08-04 | Yes |
| 227-202 | WSNGTNZN10 | 4036 | 2023-08-04 | Yes |
| 227-203 | FREDERICK | 7228 | 2023-08-15 | Yes |
| 227-204 | WSNGTNZN10 | 6855 | 2023-08-31 | Yes |
| 227-205 | WSHNGTNZN4 | 6855 | 2023-08-31 | Yes |
| 227-206 | WSHNGTNZN5 | 6855 | 2023-08-31 | Yes |
| 227-207 | BITTINGER | 939H | 2023-09-01 | Yes |
| 227-208 | FLINTSTONE | 939H | 2023-09-01 | Yes |
| 227-209 | GRANTSVL | 939H | 2023-09-01 | Yes |
| 227-210 | MCCOOLE | 939H | 2023-09-01 | Yes |
| 227-211 | XXXXXXXXXX | MULT | — | — |
| 227-212 | WESTERNPT | 939H | 2023-09-01 | Yes |
| 227-213 | ASHTON236 | 6855 | 2023-09-06 | Yes |
| 227-214 | MYERSVILLE | 4036 | 2023-09-11 | Yes |
| 227-215 | LAUREL236 | 4036 | 2023-09-20 | Yes |
| 227-216 | WSNGTNZN10 | 4036 | 2023-09-20 | Yes |
| 227-217 | MYERSVILLE | 4036 | 2023-10-12 | Yes |
| 227-218 | WSNG236Z14 | 6855 | 2023-10-19 | Yes |
| 227-219 | ASHTON236 | 7229 | 2023-10-25 | Yes |
| 227-220 | WALDORF | 4036 | 2023-11-03 | Yes |
| 227-221 | SMITHSBURG | 939H | 2023-11-21 | Yes |
| 227-222 | WSNGTNZN16 | 530H | 2023-10-17 | Yes |
| 227-223 | FREDERICK | 939H | 2023-11-21 | Yes |
| 227-224 | WSHNGTNZN2 | 4036 | 2023-12-22 | Yes |
| 227-225 | LAUREL236 | 4036 | 2023-12-27 | Yes |
| 227-226 | FREDERICK | 876D | 2024-01-29 | Yes |
| 227-227 | GAITHERSBG | 876D | 2024-01-29 | Yes |
| 227-228 | WSHNGTNZN2 | 876D | 2024-01-29 | Yes |
| 227-229 | WSHNGTNZN4 | 876D | 2024-01-29 | Yes |
| 227-230 | WSHNGTNZN5 | 876D | 2024-01-29 | Yes |
| 227-231 | WSHNGTNZN6 | 876D | 2024-01-29 | Yes |
| 227-232 | LAUREL236 | 876D | 2024-02-02 | Yes |
| 227-233 | WSHNGTNZN2 | 4036 | 2024-02-08 | Yes |
| 227-234 | LEONARDTN | 876D | 2024-03-08 | Yes |
| 227-235 | HUGHESVL | 6855 | 2024-03-13 | Yes |
| 227-236 | WSNGTNZN10 | 4036 | 2024-03-18 | Yes |
| 227-237 | MYERSVILLE | 4036 | 2024-04-12 | Yes |
| 227-238 | WSNG236Z14 | 6855 | 2024-04-17 | Yes |
| 227-239 | HAGERSTOWN | 475J | 2024-05-20 | Yes |
| 227-240 | WSNGTNZN11 | 071F | 2024-05-20 | Yes |
| 227-241 | WSNGTNZN10 | 4036 | 2024-05-23 | Yes |
| 227-242 | MIDDLETOWN | 876D | 2024-06-05 | Yes |
| 227-243 | ASHTON236 | 876D | 2024-06-12 | Yes |
| 227-244 | RIDGE | 321J | 2024-05-28 | Yes |
| 227-245 | GAITHERSBG | 876D | 2024-06-13 | Yes |
| 227-246 | WSHNGTNZN5 | 6855 | 2024-06-20 | Yes |
| 227-247 | THURMONT | 876D | 2024-06-24 | Yes |
| 227-248 | WSHNGTNZN2 | 876D | 2024-07-03 | Yes |
| 227-249 | WSHNGTNZN4 | 071F | 2024-07-11 | Yes |
| 227-250 | WSNGTNZN10 | 876D | 2024-07-31 | Yes |
| 227-251 | WSNGTNZN10 | 4036 | 2024-09-18 | Yes |
| 227-252 | MYERSVILLE | 4036 | 2024-09-24 | Yes |
| 227-253 | FREDERICK | 876D | 2024-09-26 | Yes |
| 227-254 | WSNGTNZN10 | 6855 | 2024-10-11 | Yes |
| 227-255 | WSHNGTNZN5 | 071F | 2024-10-03 | Yes |
| 227-256 | WSHNGTNZN2 | 876D | 2024-10-14 | Yes |
| 227-257 | WSNG236Z14 | 876D | 2024-10-14 | Yes |
| 227-258 | GAITHERSBG | 4036 | 2024-10-18 | Yes |
| 227-259 | LAUREL236 | 4036 | 2024-11-11 | Yes |
| 227-260 | WSNG238Z15 | 876D | 2024-11-20 | Yes |
| 227-261 | WSHNGTNZN2 | 4036 | 2024-11-27 | Yes |
| 227-262 | MYERSVILLE | 4036 | 2024-12-02 | Yes |
| 227-263 | WALDORF | 071F | 2024-12-05 | Yes |
| 227-264 | WSNGTNZN10 | 6855 | 2024-12-10 | Yes |
| 227-265 | WSHNGTNZN3 | 876D | 2024-12-16 | Yes |
| 227-266 | WSHNGTNZN2 | 4036 | 2024-12-19 | Yes |
| 227-267 | MYERSVILLE | 4036 | 2024-12-20 | Yes |
| 227-268 | LAUREL236 | 876D | 2025-01-08 | Yes |
| 227-269 | WSHNGTNZN5 | 876D | 2025-01-08 | Yes |
| 227-270 | MOUNT AIRY | 7421 | 2025-01-10 | Yes |
| 227-271 | WSNGTNZN10 | 4036 | 2025-01-14 | Yes |
| 227-272 | OAKLAND | 876D | 2025-02-06 | Yes |
| 227-273 | WSNGTNZN10 | 6855 | 2025-02-20 | Yes |
| 227-274 | WSNGTNZN10 | 876D | 2025-03-13 | Yes |
| 227-275 | WSHNGTNZN4 | 6395 | 2025-03-31 | Yes |
| 227-276 | WSHNGTNZN3 | 876D | 2025-04-16 | Yes |
| 227-277 | GAITHERSBG | 6855 | 2025-05-02 | Yes |
| 227-278 | WALDORF | 6855 | 2025-05-14 | Yes |
| 227-279 | MYERSVILLE | 4036 | 2025-05-20 | Yes |
| 227-280 | WSNGTNZN10 | 4036 | 2025-05-21 | Yes |
| 227-281 | FREDERICK | 6395 | 2025-05-27 | Yes |
| 227-282 | ASHTON236 | 6855 | 2025-05-28 | Yes |
| 227-283 | MYERSVILLE | 4036 | 2025-06-06 | Yes |
| 227-284 | LAUREL236 | 6395 | 2025-06-10 | Yes |
| 227-285 | MYERSVILLE | 4036 | 2025-06-17 | Yes |
| 227-286 | MYERSVILLE | 4036 | 2025-06-17 | Yes |
| 227-287 | WSNGTNZN10 | 4036 | 2025-07-10 | Yes |
| 227-288 | HAGERSTOWN | 876D | 2025-08-13 | Yes |
| 227-289 | WALDORF | 6855 | 2025-08-27 | Yes |
| 227-290 | LAUREL236 | 6395 | 2025-09-24 | Yes |
| 227-291 | FRIENDSVL | 6855 | 2025-07-15 | Yes |
| 227-292 | ASHTON236 | 6855 | 2025-06-26 | Yes |
| 227-293 | CUMBERLAND | 7228 | 2025-08-07 | Yes |
| 227-294 | WSNG236Z13 | 876D | 2025-11-04 | Yes |
| 227-295 | HAGERSTOWN | 700J | 2025-11-26 | Yes |
| 227-296 | WSNGTNZN12 | 876D | 2026-01-30 | Yes |
| 227-297 | LAUREL236 | 6395 | 2026-02-19 | Yes |
| 227-298 | WSNGTNZN10 | 6395 | 2026-02-25 | Yes |
| 227-299 | MYERSVILLE | 4036 | 2026-03-13 | 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.