All assignees
800 prefixes in 281 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 281-200 | LANGHAMCRK | 903C | — | Yes |
| 281-201 | SUGAR LAND | 7421 | — | Yes |
| 281-202 | RICHMNRNBG | 7138 | — | Yes |
| 281-203 | SPRING | 7138 | — | Yes |
| 281-204 | APOLLO | 7138 | — | Yes |
| 281-205 | TOMBALL | 7138 | — | Yes |
| 281-206 | BARKER | 7421 | — | Yes |
| 281-207 | SUGAR LAND | 7074 | — | Yes |
| 281-208 | STAFFORD | 4344 | — | Yes |
| 281-209 | WESTFIELD | 9533 | — | Yes |
| 281-210 | SPRING | 7074 | — | Yes |
| 281-211 | XXXXXXXXXX | MULT | — | — |
| 281-212 | APOLLO | 9533 | — | Yes |
| 281-213 | CYPRESS | 9533 | — | Yes |
| 281-214 | WESTFIELD | 6114 | — | Yes |
| 281-215 | SHELDON | 903C | — | Yes |
| 281-216 | HOUSTON | 6534 | — | — |
| 281-217 | HOUSTON | 6534 | — | — |
| 281-218 | APOLLO | 9533 | — | Yes |
| 281-219 | HSTNSUBURB | 9533 | — | Yes |
| 281-220 | HOUSTON | 7670 | — | Yes |
| 281-221 | HOUSTON | 6534 | — | — |
| 281-222 | HOUSTON | 6534 | — | — |
| 281-223 | CLEVELAND | 829J | 2013-05-23 | Yes |
| 281-224 | HOUSTON | 6534 | — | — |
| 281-225 | HOUSTON | 2091 | — | — |
| 281-226 | APOLLO | 9533 | — | Yes |
| 281-227 | HSTNSUBURB | 9533 | — | — |
| 281-228 | HOUSTON | 9533 | — | — |
| 281-229 | DICKINSON | 6506 | 2002-08-20 | Yes |
| 281-230 | WESTFIELD | 9533 | — | — |
| 281-231 | WESTFIELD | 9533 | 2004-01-20 | Yes |
| 281-232 | RICHMNRNBG | 9533 | — | — |
| 281-233 | WESTFIELD | 9533 | — | — |
| 281-234 | KATY | 2109 | 2006-04-17 | Yes |
| 281-235 | BAMMEL | 6701 | — | — |
| 281-236 | HOUSTON | 6701 | — | — |
| 281-237 | KATY | 2109 | 2003-10-21 | Yes |
| 281-238 | RICHMNRNBG | 9533 | — | Yes |
| 281-239 | RICHMNRNBG | 9533 | — | — |
| 281-240 | SUGAR LAND | 2147 | — | — |
| 281-241 | DEER PARK | 7074 | — | Yes |
| 281-242 | SUGAR LAND | 2147 | — | — |
| 281-243 | SUGAR LAND | 2147 | — | — |
| 281-244 | APOLLO | 9533 | — | — |
| 281-245 | ALVIN | 7074 | — | Yes |
| 281-246 | CYPRESS | 2091 | — | — |
| 281-247 | CHANNELVW | 6114 | — | Yes |
| 281-248 | BAMMEL | 7421 | — | Yes |
| 281-249 | HSTNSUBURB | 7138 | — | Yes |
| 281-250 | HOUSTON | 6701 | — | — |
| 281-251 | TOMBALL | 9533 | — | — |
| 281-252 | PINEHURST | 9533 | — | Yes |
| 281-253 | LANGHAMCRK | 6506 | — | — |
| 281-254 | HOUSTON | 6506 | 2011-07-05 | Yes |
| 281-255 | TOMBALL | 9533 | — | — |
| 281-256 | CYPRESS | 9533 | — | Yes |
| 281-257 | TOMBALL | 9533 | — | — |
| 281-258 | HSTNSUBURB | 9533 | 2002-07-09 | Yes |
| 281-259 | PINEHURST | 9533 | — | — |
| 281-260 | HSTNSUBURB | 9533 | — | — |
| 281-261 | STAFFORD | 4344 | — | — |
| 281-262 | SUGAR LAND | 2147 | — | — |
| 281-263 | SUGAR LAND | 2147 | — | — |
| 281-264 | SUGAR LAND | 2147 | — | — |
| 281-265 | SUGAR LAND | 2147 | — | — |
| 281-266 | HOUSTON | 6630 | — | — |
| 281-267 | HOUSTON | 6630 | — | — |
| 281-268 | HOUSTON | 6630 | — | — |
| 281-269 | SUGAR LAND | 2147 | — | — |
| 281-270 | BARKER | 903C | 2023-09-28 | Yes |
| 281-271 | DEER PARK | 6114 | — | Yes |
| 281-272 | HSTNSUBURB | 9533 | — | Yes |
| 281-273 | SUGAR LAND | 2147 | — | — |
| 281-274 | SUGAR LAND | 2147 | — | — |
| 281-275 | SUGAR LAND | 2147 | — | — |
| 281-276 | SUGAR LAND | 2147 | — | — |
| 281-277 | SUGAR LAND | 2147 | — | — |
| 281-278 | SUGAR LAND | 2147 | — | — |
| 281-279 | SUGAR LAND | 2147 | — | — |
| 281-280 | APOLLO | 9533 | — | — |
| 281-281 | HSTNSUBURB | 473F | 2023-01-06 | Yes |
| 281-282 | APOLLO | 9533 | — | Yes |
| 281-283 | APOLLO | 9533 | — | — |
| 281-284 | APOLLO | 9533 | — | — |
| 281-285 | SUGAR LAND | 2147 | — | — |
| 281-286 | APOLLO | 9533 | — | — |
| 281-287 | SUGAR LAND | 2147 | — | — |
| 281-288 | SPRING | 9533 | — | — |
| 281-289 | SUGAR LAND | 2147 | — | — |
| 281-290 | TOMBALL | 9533 | — | Yes |
| 281-291 | SEABROOK | 9533 | — | — |
| 281-292 | SPRING | 9533 | — | — |
| 281-293 | HSTNSUBURB | 9533 | — | — |
| 281-294 | SUGAR LAND | 2147 | — | — |
| 281-295 | SUGAR LAND | 2147 | — | — |
| 281-296 | SPRING | 9533 | — | Yes |
| 281-297 | SPRING | 9533 | — | Yes |
| 281-298 | SPRING | 9533 | — | — |
| 281-299 | ALVIN | 6506 | — | 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.