NumberResearchRecent prefix assignments
371 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 928-214 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-217 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7175 | YUMA | AZ | |
| 928-219 | CSC VOICE, LLC | 612K | BULLHEADCY | AZ | |
| 928-220 | METROPCS, INC. | 5562 | FLAGSTAFF | AZ | |
| 928-221 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FLAGSTAFF | AZ | |
| 928-222 | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ | |
| 928-223 | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ | |
| 928-226 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-227 | TELEPORT COMMUNICATIONS AMERICA, LLC - AZ | 7217 | PRESCOTT | AZ | |
| 928-231 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | WICKENBURG | AZ | |
| 928-233 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7175 | FLAGSTAFF | AZ | |
| 928-244 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7175 | YUMA | AZ | |
| 928-246 | T-MOBILE USA, INC. | 6529 | YUMA | AZ | |
| 928-252 | COMCAST IP PHONE, LLC | 318J | LKPLEASANT | AZ | |
| 928-253 | NORTH COUNTY COMMUNICATIONS CORPORATION | 8293 | PRESCOTT | AZ | |
| 928-254 | METROPCS, INC. | 5562 | SEDONA | AZ | |
| 928-255 | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | FLAGSTAFF | AZ | |
| 928-257 | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | YUMA | AZ | |
| 928-261 | T-MOBILE USA, INC. | 6529 | YUMA | AZ | |
| 928-262 | NORTH COUNTY COMMUNICATIONS CORPORATION | 8293 | YUMA | AZ | |
| 928-264 | CSC VOICE, LLC | 612K | EHRENBERG | AZ | |
| 928-266 | CSC VOICE, LLC | 612K | FLAGSTAFF | AZ | |
| 928-267 | ONVOY, LLC - AZ | 630E | PAYSON | AZ | |
| 928-268 | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ | |
| 928-269 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-272 | ONVOY, LLC - AZ | 630E | GRANDCNYON | AZ | |
| 928-273 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PRESCOTT | AZ | |
| 928-274 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SEDONA | AZ | |
| 928-277 | LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | PRESCOTT | AZ | |
| 928-282 | QWEST CORPORATION | 9636 | SEDONA | AZ | |
| 928-283 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | TUBA CITY | AZ | |
| 928-284 | QWEST CORPORATION | 9636 | SEDONA | AZ | |
| 928-286 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-288 | QWEST CORPORATION | 9636 | WINSLOW | AZ | |
| 928-289 | QWEST CORPORATION | 9636 | WINSLOW | AZ | |
| 928-300 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ | |
| 928-301 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | SEDONA | AZ | |
| 928-302 | CSC VOICE, LLC | 612K | LKHAVASUCY | AZ | |
| 928-305 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-308 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ | |
| 928-309 | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | 4146 | WINDOWROCK | AZ | |
| 928-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AZ | |
| 928-314 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-317 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-324 | ONVOY, LLC - AZ | 630E | SAFFORD | AZ | |
| 928-328 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-329 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-330 | FORT MOJAVE TELECOM INC | 2200 | MESQUITCRK | AZ | |
| 928-332 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | WHITERIVER | AZ | |
| 928-333 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | SPRINGERVL | AZ |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.