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
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 928-658 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | DENNEHOTSO | AZ | |
| 928-659 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | ROCK POINT | AZ | |
| 928-660 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PAGE | AZ | |
| 928-662 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - AZ | 4419 | PARKER DAM | AZ | |
| 928-667 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - AZ | 4419 | PARKER DAM | AZ | |
| 928-668 | QWEST CORPORATION | 9636 | WICKENBURG | AZ | |
| 928-669 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - AZ | 4419 | PARKER | AZ | |
| 928-671 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | WICKENBURG | AZ | |
| 928-672 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | SHONTO | AZ | |
| 928-673 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | KAIBITO | AZ | |
| 928-674 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | CHINLE | AZ | |
| 928-677 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | BLACK MESA | AZ | |
| 928-679 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-680 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | LKHAVASUCY | AZ | |
| 928-681 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | KINGMAN | AZ | |
| 928-683 | QWEST CORPORATION | 9636 | GILA BEND | AZ | |
| 928-684 | QWEST CORPORATION | 9636 | WICKENBURG | AZ | |
| 928-685 | TABLE TOP TELEPHONE COMPANY | 3334 | AGUILA | AZ | |
| 928-686 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | LEUPP | AZ | |
| 928-687 | VALLEY TEL COOP INC | 2176 | YORKVALLEY | AZ | |
| 928-688 | TABLE TOP TELEPHONE COMPANY | 3334 | SANDERS | AZ | |
| 928-691 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PAGE | AZ | |
| 928-692 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | KINGMAN | AZ | |
| 928-693 | ONVOY, LLC - AZ | 630E | PAGE | AZ | |
| 928-697 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | KAYENTA | AZ | |
| 928-698 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | LE CHEE | AZ | |
| 928-699 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ | |
| 928-700 | AZ | ||||
| 928-701 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GLOBE | AZ | |
| 928-704 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | BULLHEADCY | AZ | |
| 928-706 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LKHAVASUCY | AZ | |
| 928-707 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | FLAGSTAFF | AZ | |
| 928-708 | QWEST CORPORATION | 9636 | PRESCOTT | AZ | |
| 928-710 | T-MOBILE USA, INC. | 6529 | PRESCOTT | AZ | |
| 928-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AZ | |
| 928-713 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PRESCOTT | AZ | |
| 928-714 | QWEST CORPORATION | 9636 | FLAGSTAFF | AZ | |
| 928-715 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | KINGMAN | AZ | |
| 928-716 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | KINGMAN | AZ | |
| 928-717 | QWEST CORPORATION | 9636 | PRESCOTT | AZ | |
| 928-718 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL | 2172 | KINGMAN | AZ | |
| 928-719 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GLOBE | AZ | |
| 928-724 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | TSAILE | AZ | |
| 928-725 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | PINONCTNWD | AZ | |
| 928-726 | QWEST CORPORATION | 9636 | YUMA | AZ | |
| 928-727 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | KINGMAN | AZ | |
| 928-728 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | ROUGH ROCK | AZ | |
| 928-729 | NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM | 4449 | FTDEFIANCE | AZ | |
| 928-734 | HOPI TELECOMMUNICATIONS INCORPORATED - AZ | 815D | KYKTSMOVLG | AZ | |
| 928-735 | CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | GREER | 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.