NumberResearchRecent prefix assignments
337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
Most active assignees, last 30 days
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 701-473 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | MINNEWAKAN | ND |
| — | 701-474 | not yet reported which blocks → | RED RIVER RURAL TEL ASSN DBA RED RIVER COMM - ND | 1631 | FAIRMOUNT | ND |
| — | 701-475 | not yet reported which blocks → | BEK COMMUNICATIONS COOPERATIVE | 1604 | STEELE | ND |
| — | 701-476 | not yet reported which blocks → | QWEST CORPORATION | 9631 | FARGO | ND |
| — | 701-477 | none assigned yet which blocks → | TURTLE MOUNTAIN COMMUN., INC. | 1678 | ROLLA | ND |
| — | 701-478 | not yet reported which blocks → | VAL-ED JOINT VENTURE, LLP DBA 702 COMMUNICATIONS | 2737 | FARGO | ND |
| — | 701-479 | not yet reported which blocks → | ND | |||
| — | 701-480 | 9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | BOTTINEAU | ND |
| — | 701-481 | not yet reported which blocks → | QWEST CORPORATION | 9636 | EASTSIDNEY | ND |
| — | 701-482 | not yet reported which blocks → | SRT COMMUNICATIONS, INC. | 3303 | DONNYBROOK | ND |
| — | 701-483 | not yet reported which blocks → | CONSOLIDATED COMMUNICATIONS NETWORKS, INC. - ND | 7008 | DICKINSON | ND |
| — | 701-484 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | QWEST CORPORATION | 9631 | GARDNER | ND |
| — | 701-485 | not yet reported which blocks → | DAKOTA CENTRAL TELECOM I, INC. | 1683 | GACKLE | ND |
| — | 701-486 | not yet reported which blocks → | DAKOTA CENTRAL TELECOMMUNICATIONS COOP. | 1610 | MEDINA | ND |
| — | 701-487 | not yet reported which blocks → | WEST RIVER TELECOMMUNICATIONS COOP. - ND | 4413 | PICK CITY | ND |
| — | 701-488 | not yet reported which blocks → | POLAR COMMUN MUTUAL AID CORP. | 1630 | GALESBURG | ND |
| — | 701-489 | not yet reported which blocks → | DAKOTA CENTRAL TELECOMMUNICATIONS COOP. | 1610 | YPSILANTI | ND |
| — | 701-490 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | VALLEYCITY | ND |
| — | 701-491 | 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | COMMIO, LLC | 939H | FARGO | ND |
| — | 701-492 | not yet reported which blocks → | QWEST CORPORATION | 9631 | FARGO | ND |
| — | 701-493 | not yet reported which blocks → | DICKEY RURAL TEL. COOP. | 1611 | EDGELEY | ND |
| — | 701-495 | 0–9 XXXall 10 · 7 holders which blocks → | TELNYX LLC | 073H | DICKINSON | ND |
| — | 701-496 | not yet reported which blocks → | UNITED TEL. MUTUAL AID CORP. | 1636 | MILTON | ND |
| — | 701-497 | not yet reported which blocks → | RESERVATION TEL. COOP. | 1632 | PLAZA | ND |
| — | 701-502 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - ND | 452F | DICKINSON | ND |
| — | 701-506 | 0XXX1XXX3XXX7XXX8XXX9XXX · 6 holders which blocks → | ONVOY, LLC - ND | 452F | CASSELTON | ND |
| — | 701-508 | 0XXX1XXX4XXX8XXX · 3 holders which blocks → | ONVOY, LLC - ND | 452F | HATTON | ND |
| — | 701-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | ND |
| — | 701-516 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | AT&T - LOCAL | 7421 | BISMARCK | ND |
| — | 701-520 | none assigned yet which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | ST THOMAS | ND |
| — | 701-521 | 1XXX5XXX7XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CAVALIER | ND |
| — | 701-522 | not yet reported which blocks → | QWEST CORPORATION | 9631 | NOMORRISTN | ND |
| — | 701-523 | not yet reported which blocks → | CONSOLIDATED TELCOM | 1607 | BOWMAN | ND |
| — | 701-524 | 8XXX which blocks → | GRIGGS COUNTY TEL. CO. | 1615 | FINLEY | ND |
| — | 701-525 | not yet reported which blocks → | SRT COMMUNICATIONS, INC. | 3303 | KARLSRUHE | ND |
| — | 701-528 | not yet reported which blocks → | NORTHWEST COMMUNICATIONS COOP. | 1625 | ALAMO | ND |
| — | 701-529 | not yet reported which blocks → | RESERVATION TEL. COOP. | 1632 | DOUGLAS | ND |
| — | 701-530 | not yet reported which blocks → | QWEST CORPORATION | 9631 | BISMARCK | ND |
| — | 701-537 | 4XXX which blocks → | SRT COMMUNICATIONS, INC. | 3303 | TOWNER | ND |
| — | 701-538 | not yet reported which blocks → | RED RIVER RURAL TEL ASSN DBA RED RIVER COMM - ND | 1631 | LIDGERWOOD | ND |
| — | 701-539 | not yet reported which blocks → | NORTHWEST COMMUNICATIONS COOP. | 1625 | WILDROSE | ND |
| — | 701-542 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | BALTA | ND |
| — | 701-543 | 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9631 | HATTON | ND |
| — | 701-545 | not yet reported which blocks → | RED RIVER RURAL TEL ASSN DBA RED RIVER COMM - ND | 1631 | GREAT BEND | ND |
| — | 701-546 | not yet reported which blocks → | NORTHWEST COMMUNICATIONS COOP. | 1625 | MCGREGOR | ND |
| — | 701-547 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | FESSENDEN | ND |
| — | 701-548 | not yet reported which blocks → | CONSOLIDATED TELCOM | 1607 | DUNNCENTER | ND |
| — | 701-549 | not yet reported which blocks → | UNITED TEL. MUTUAL AID CORP. | 1636 | WALHALLA | ND |
| — | 701-550 | 2XXX5XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | ROLLA | ND |
| — | 701-553 | not yet reported which blocks → | RED RIVER RURAL TEL ASSN DBA RED RIVER COMM - ND | 1631 | ABERCROMBI | ND |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.