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
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 928-447 | ONVOY, LLC - AZ | 630E | FLAGSTAFF | AZ | |
| 928-448 | ARIZONA TEL. CO. | 2171 | SUPAI | AZ | |
| 928-453 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | LKHAVASUCY | AZ | |
| 928-454 | ARIZONA TEL. CO. | 2171 | HYDER | AZ | |
| 928-459 | T-MOBILE USA, INC. | 6529 | YUMA | AZ | |
| 928-460 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ | |
| 928-462 | MIDVALE TELEPHONE EXCHANGE, INC. | 2226 | YOUNG | AZ | |
| 928-467 | ARIZONA TEL. CO. | 2171 | ROOSEVLTLK | AZ | |
| 928-468 | QWEST CORPORATION | 9636 | PAYSON | AZ | |
| 928-472 | QWEST CORPORATION | 9636 | PAYSON | AZ | |
| 928-473 | QWEST CORPORATION | 9636 | GLOBE | AZ | |
| 928-474 | QWEST CORPORATION | 9636 | PAYSON | AZ | |
| 928-475 | SAN CARLOS APACHE TELECOMMUNICATIONS UTILITY, INC. | 2169 | SAN CARLOS | AZ | |
| 928-476 | QWEST CORPORATION | 9636 | PAYSON | AZ | |
| 928-477 | ARIZONA TEL. CO. | 2171 | BLUE RIDGE | AZ | |
| 928-478 | QWEST CORPORATION | 9636 | PAYSON | AZ | |
| 928-479 | ARIZONA TEL. CO. | 2171 | ROOSEVLTLK | AZ | |
| 928-482 | LEVEL 3 TELECOM OF ARIZONA, LLC - AZ | 7552 | GILA BEND | AZ | |
| 928-484 | ONVOY, LLC - AZ | 630E | PAGE | AZ | |
| 928-485 | QWEST CORPORATION | 9636 | PIMA | AZ | |
| 928-492 | ONVOY, LLC - AZ | 630E | PAYSON | AZ | |
| 928-493 | ONVOY, LLC - AZ | 630E | PRESCOTT | AZ | |
| 928-496 | ONVOY, LLC - AZ | 630E | SEDONA | AZ | |
| 928-498 | TELEPORT COMMUNICATIONS AMERICA, LLC - AZ | 7217 | SNOWFLAKE | AZ | |
| 928-499 | TELEPORT COMMUNICATIONS AMERICA, LLC - AZ | 7217 | PRESCOTT | AZ | |
| 928-501 | ACCIPITER COMMUNICATIONS INC | 2191 | LKPLEASANT | AZ | |
| 928-503 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | YUMA | AZ | |
| 928-504 | ONVOY, LLC - AZ | 630E | SOMERTON | AZ | |
| 928-505 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | LKHAVASUCY | AZ | |
| 928-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AZ | |
| 928-517 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PAYSON | AZ | |
| 928-521 | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | 4146 | SHOW LOW | AZ | |
| 928-522 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-523 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-524 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | HOLBROOK | AZ | |
| 928-525 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-526 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-527 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-528 | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | 4146 | SHOW LOW | AZ | |
| 928-530 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KINGMAN | AZ | |
| 928-532 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | SHOW LOW | AZ | |
| 928-535 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | HEBER | AZ | |
| 928-536 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | SNOWFLAKE | AZ | |
| 928-537 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | SHOW LOW | AZ | |
| 928-539 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-541 | QWEST CORPORATION | 9636 | PRESCOTT | AZ | |
| 928-543 | ONVOY, LLC - AZ | 630E | WICKENBURG | AZ | |
| 928-552 | QWEST CORPORATION | 9636 | SAFFORD | AZ | |
| 928-554 | QWEST CORPORATION | 9636 | SEDONA | AZ | |
| 928-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | 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.