All assignees
647 prefixes in 928 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 928-200 | GLOBE | 6572 | — | — |
| 928-201 | BULLHEADCY | 6010 | — | — |
| 928-202 | SEDONA | 3285 | 2002-08-16 | Yes |
| 928-203 | SEDONA | 9636 | — | Yes |
| 928-204 | SEDONA | 9636 | — | — |
| 928-205 | SHOW LOW | 4146 | 2002-10-30 | — |
| 928-206 | TUBA CITY | 4146 | 2002-10-30 | — |
| 928-207 | SHOW LOW | 4146 | 2002-10-30 | — |
| 928-208 | LKHAVASUCY | 3285 | 2002-11-14 | Yes |
| 928-209 | PAGE | 4146 | 2002-11-26 | — |
| 928-210 | YUMA | 6572 | — | — |
| 928-211 | XXXXXXXXXX | MULT | — | — |
| 928-212 | PAGE | 630E | 2012-01-25 | Yes |
| 928-213 | FLAGSTAFF | 9636 | — | — |
| 928-214 | FLAGSTAFF | 9636 | — | — |
| 928-215 | CLIFTON | 6572 | 2003-04-03 | Yes |
| 928-216 | PARKER | 6572 | 2004-03-23 | Yes |
| 928-217 | YUMA | 7175 | — | Yes |
| 928-218 | MEADVIEW | 6010 | 2004-03-25 | Yes |
| 928-219 | BULLHEADCY | 612K | — | Yes |
| 928-220 | FLAGSTAFF | 5562 | — | Yes |
| 928-221 | FLAGSTAFF | 6010 | — | Yes |
| 928-222 | FLAGSTAFF | 630E | — | — |
| 928-223 | FLAGSTAFF | 630E | — | — |
| 928-224 | WINSLOW | 3285 | 2002-04-04 | Yes |
| 928-225 | FLAGSTAFF | 6529 | 2002-01-31 | Yes |
| 928-226 | FLAGSTAFF | 9636 | — | — |
| 928-227 | PRESCOTT | 7217 | — | Yes |
| 928-228 | PIMA | 587F | 2010-09-03 | Yes |
| 928-229 | SNOWFLAKE | 4146 | 2005-12-20 | — |
| 928-230 | LKHAVASUCY | 6529 | 2002-09-17 | Yes |
| 928-231 | WICKENBURG | 6572 | — | Yes |
| 928-232 | WICKENBURG | 6529 | 2002-07-03 | Yes |
| 928-233 | FLAGSTAFF | 7175 | — | Yes |
| 928-234 | BULLHEADCY | 6010 | 2001-11-19 | Yes |
| 928-235 | SAFFORD | 6572 | 2010-03-10 | Yes |
| 928-236 | SOMERTON | 630E | 2016-02-10 | Yes |
| 928-237 | PRESCOTT | 6529 | 2002-08-07 | Yes |
| 928-238 | PAYSON | 6572 | 2002-08-07 | Yes |
| 928-239 | SEDONA | 6529 | 2002-08-07 | Yes |
| 928-240 | HEBER | 6572 | 2002-12-31 | Yes |
| 928-241 | HOLBROOK | 6572 | 2002-12-31 | Yes |
| 928-242 | PINETOP | 6572 | 2002-12-31 | — |
| 928-243 | SNOWFLAKE | 6572 | 2002-12-31 | Yes |
| 928-244 | YUMA | 7175 | — | — |
| 928-245 | SPRINGERVL | 6572 | 2002-12-31 | — |
| 928-246 | YUMA | 6529 | — | Yes |
| 928-247 | YUMA | 3285 | 2007-03-15 | Yes |
| 928-248 | YUMA | 793K | 2011-11-22 | Yes |
| 928-249 | LKMHVRNCHS | 6010 | 2004-03-29 | Yes |
| 928-250 | SAFFORD | 6529 | 2016-06-09 | Yes |
| 928-251 | SHOW LOW | 3285 | 2006-10-05 | Yes |
| 928-252 | LKPLEASANT | 318J | — | Yes |
| 928-253 | PRESCOTT | 8293 | — | — |
| 928-254 | SEDONA | 5562 | — | Yes |
| 928-255 | FLAGSTAFF | 3285 | — | Yes |
| 928-256 | YUMA | 6529 | 2016-07-15 | Yes |
| 928-257 | YUMA | 3285 | — | Yes |
| 928-258 | AGUILA | 6572 | 2011-04-28 | Yes |
| 928-259 | YUMA | 6529 | 2010-03-15 | Yes |
| 928-260 | WIKIEUP | 630E | 2018-06-28 | Yes |
| 928-261 | YUMA | 6529 | — | Yes |
| 928-262 | YUMA | 8293 | — | — |
| 928-263 | KINGMAN | 2172 | 2007-05-03 | Yes |
| 928-264 | EHRENBERG | 612K | — | Yes |
| 928-265 | CASTLEROCK | 6572 | 2025-09-25 | Yes |
| 928-266 | FLAGSTAFF | 612K | — | Yes |
| 928-267 | PAYSON | 630E | — | Yes |
| 928-268 | FLAGSTAFF | 630E | — | — |
| 928-269 | YUMA | 9636 | — | — |
| 928-270 | SPRINGERVL | 7217 | 2020-03-25 | Yes |
| 928-271 | YUMA | 6010 | 2006-03-08 | Yes |
| 928-272 | GRANDCNYON | 630E | — | Yes |
| 928-273 | PRESCOTT | 6010 | — | Yes |
| 928-274 | SEDONA | 6010 | — | Yes |
| 928-275 | GLOBE | 6010 | 2010-10-15 | Yes |
| 928-276 | YUMA | 793K | 2006-08-07 | Yes |
| 928-277 | PRESCOTT | 3285 | — | Yes |
| 928-278 | BULLHEADCY | 3285 | 2012-12-19 | Yes |
| 928-279 | KINGMAN | 6529 | 2001-03-12 | Yes |
| 928-280 | TUBA CITY | 6010 | 2010-05-26 | Yes |
| 928-281 | SELIGMAN | 3285 | 2018-08-09 | Yes |
| 928-282 | SEDONA | 9636 | — | — |
| 928-283 | TUBA CITY | 4449 | — | — |
| 928-284 | SEDONA | 9636 | — | Yes |
| 928-285 | SOMERTON | 7421 | 2012-08-08 | Yes |
| 928-286 | FLAGSTAFF | 9636 | — | Yes |
| 928-287 | YUMA | 6010 | 2006-06-12 | Yes |
| 928-288 | WINSLOW | 9636 | — | Yes |
| 928-289 | WINSLOW | 9636 | — | — |
| 928-290 | BAGDAD | 3285 | 2018-08-09 | Yes |
| 928-291 | YUMA | 630E | 2016-07-13 | Yes |
| 928-292 | CLIFTON | 6010 | 2006-02-16 | Yes |
| 928-293 | KINGMAN | 6572 | 2013-06-14 | Yes |
| 928-294 | YUMA | 6572 | 2017-01-05 | Yes |
| 928-295 | SEDONA | 7421 | 2014-07-24 | Yes |
| 928-296 | BULLHEADCY | 6572 | 2017-03-16 | Yes |
| 928-297 | HOLBROOK | 3285 | 2006-12-27 | Yes |
| 928-298 | PIMA | 6572 | 2013-03-15 | Yes |
| 928-299 | BULLHEADCY | 612K | 2014-02-06 | 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.