NumberResearchRecent prefix assignments
341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
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
Sep 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 701-599 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9631 | THOMPSON | ND |
| — | 701-605 | not yet reported which blocks → | ND | |||
| — | 701-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | ND |
| — | 701-621 | 2XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | STANLEY | ND |
| — | 701-622 | not yet reported which blocks → | WEST RIVER TELECOMMUNICATIONS COOP. - ND | 4413 | CARSON | ND |
| — | 701-623 | not yet reported which blocks → | RESERVATION TEL. COOP. | 1632 | MEDORA | ND |
| — | 701-624 | not yet reported which blocks → | SRT COMMUNICATIONS, INC. | 3303 | SAWYER | ND |
| — | 701-626 | none assigned yet which blocks → | SRT COMMUNICATIONS, INC. | 3303 | BUTTE | ND |
| — | 701-627 | not yet reported which blocks → | RESERVATION TEL. COOP. | 1632 | NEW TOWN | ND |
| — | 701-628 | not yet reported which blocks → | RESERVATION TEL. COOP. | 1632 | STANLEY | ND |
| — | 701-629 | 2XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | STANLEY | ND |
| — | 701-633 | not yet reported which blocks → | INTER-COMMUNITY TELEPHONE COMPANY, LLC | 1616 | BUFFALO | ND |
| — | 701-634 | not yet reported which blocks → | RC TECHNOLOGIES | 1674 | NNWEFFNGTN | ND |
| — | 701-636 | not yet reported which blocks → | HALSTAD TELEPHONE COMPANY - ND | 3796 | HILLSBORO | ND |
| — | 701-639 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | AT&T - LOCAL | 7421 | FARGO | ND |
| — | 701-640 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | WAHPETON | ND |
| — | 701-641 | none assigned yet which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | TIOGA | ND |
| — | 701-642 | 0XXX which blocks → | QWEST CORPORATION | 9631 | WAHPETON | ND |
| — | 701-644 | not yet reported which blocks → | POLAR COMMUN MUTUAL AID CORP. | 1630 | EDMORE | ND |
| — | 701-645 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ND | 8054 | LEONARD | ND |
| — | 701-646 | not yet reported which blocks → | INTER-COMMUNITY TELEPHONE COMPANY, LLC | 1616 | SANBORN | ND |
| — | 701-647 | not yet reported which blocks → | DICKEY RURAL TEL. COOP. | 1611 | KULM | ND |
| — | 701-648 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | TIOGA | ND |
| — | 701-649 | none assigned yet which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | CARRINGTON | ND |
| — | 701-650 | 2XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | CARRINGTON | ND |
| — | 701-652 | none assigned yet which blocks → | DAKOTA CENTRAL TELECOM I, INC. | 1683 | CARRINGTON | ND |
| — | 701-653 | none assigned yet which blocks → | DAKOTA CENTRAL TELECOM I, INC. | 1683 | CARRINGTON | ND |
| — | 701-654 | not yet reported which blocks → | WEST RIVER TELECOMMUNICATIONS COOP. - ND | 4413 | UNDERWOOD | ND |
| — | 701-655 | not yet reported which blocks → | POLAR COMMUN MUTUAL AID CORP. | 1630 | BROCKET | ND |
| — | 701-656 | not yet reported which blocks → | TURTLE MOUNTAIN COMMUN., INC. | 1678 | BISBEE | ND |
| — | 701-657 | not yet reported which blocks → | POLAR COMMUN MUTUAL AID CORP. | 1630 | CRYSTAL | ND |
| — | 701-662 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | DEVILSLAKE | ND |
| — | 701-663 | not yet reported which blocks → | QWEST CORPORATION | 9631 | BISMARCK | ND |
| — | 701-664 | not yet reported which blocks → | NORTHWEST COMMUNICATIONS COOP. | 1625 | TIOGA | ND |
| — | 701-665 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | DEVILSLAKE | ND |
| — | 701-667 | not yet reported which blocks → | QWEST CORPORATION | 9631 | BISMARCK | ND |
| — | 701-668 | not yet reported which blocks → | INTER-COMMUNITY TELEPHONE COMPANY, LLC | 1616 | PAGE | ND |
| — | 701-669 | not yet reported which blocks → | DICKEY RURAL TEL. COOP. | 1611 | MARION | ND |
| — | 701-671 | 0XXX5XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9631 | WAHPETON | ND |
| — | 701-672 | not yet reported which blocks → | VAL-ED JOINT VENTURE, LLP DBA 702 COMMUNICATIONS | 2737 | WAHPETON | ND |
| — | 701-673 | not yet reported which blocks → | BEK COMMUNICATIONS COOPERATIVE | 1604 | MCKENZIE | ND |
| — | 701-674 | not yet reported which blocks → | DAKOTA CENTRAL TELECOMMUNICATIONS COOP. | 1610 | GRACE CITY | ND |
| — | 701-675 | not yet reported which blocks → | RESERVATION TEL. COOP. | 1632 | KEENE | ND |
| — | 701-676 | not yet reported which blocks → | GRIGGS COUNTY TEL. CO. | 1615 | BINFORD | ND |
| — | 701-677 | not yet reported which blocks → | CONSOLIDATED TELCOM | 1607 | SOUTHHEART | ND |
| — | 701-678 | not yet reported which blocks → | DICKEY RURAL TEL. COOP. | 1611 | GWINNER | ND |
| — | 701-679 | none assigned yet which blocks → | RESERVATION TEL. COOP. | 1632 | MAX | ND |
| — | 701-680 | 4XXX6XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | GWINNER | ND |
| — | 701-681 | 2XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND | 6568 | RUGBY | ND |
| — | 701-682 | not yet reported which blocks → | UNITED TEL. MUTUAL AID CORP. | 1636 | MUNICH | ND |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.