NumberResearchRecent thousands-block assignments
10 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 406
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-05-12 | 406-485-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CIRCLE | MT |
| 2025-05-12 | 406-525-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SO WOLF PT | MT |
| 2025-05-12 | 406-772-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PLEVNA | MT |
| 2025-05-12 | 406-775-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EKALAKA | MT |
| 2025-05-12 | 406-778-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BAKER | MT |
| 2025-05-12 | 406-787-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CULBERTSON | MT |
| 2025-05-12 | 406-930-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BIG TIMBER | MT |
| 2025-05-12 | 406-935-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BROADUS | MT |
| 2025-05-12 | 406-977-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JORDAN | MT |
| 2025-05-12 | 406-989-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | W GLENDIVE | MT |
| 2025-05-07 | 406-375-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAMILTON | MT |
| 2025-05-01 | 406-559-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANACONDA | MT |
| 2025-04-29 | 406-687-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W GLENDIVE | MT |
| 2025-04-29 | 406-687-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W GLENDIVE | MT |
| 2025-04-29 | 406-955-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KALISPELL | MT |
| 2025-04-29 | 406-955-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KALISPELL | MT |
| 2025-04-29 | 406-955-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KALISPELL | MT |
| 2025-04-22 | 406-677-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | SEELEYLAKE | MT |
| 2025-04-22 | 406-815-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | RED LODGE | MT |
| 2025-04-16 | 406-703-7XXX | 7000–7999 | Assigned | AIRUS, INC. - MT | 588H | COLUMBUS | MT |
| 2025-04-09 | 406-749-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | COLSTRIP | MT |
| 2025-04-09 | 406-992-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MT | 453F | HELENA | MT |
| 2025-03-24 | 406-722-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ALBERTON | MT |
| 2025-03-20 | 406-967-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WORDEN | MT |
| 2025-03-18 | 406-307-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CANYON CRK | MT |
| 2025-03-07 | 406-617-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BILLINGS | MT |
| 2025-02-24 | 406-348-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HUNTLEY | MT |
| 2025-02-18 | 406-900-0XXX | 0000–0999 | Assigned | LIVEWIRE TELECOM, LLC | 509K | ENNIS | MT |
| 2025-02-18 | 406-900-2XXX | 2000–2999 | Assigned | LIVEWIRE TELECOM, LLC | 509K | ENNIS | MT |
| 2025-02-18 | 406-900-4XXX | 4000–4999 | Assigned | LIVEWIRE TELECOM, LLC | 509K | ENNIS | MT |
| 2025-02-18 | 406-900-7XXX | 7000–7999 | Assigned | LIVEWIRE TELECOM, LLC | 509K | ENNIS | MT |
| 2025-02-18 | 406-900-8XXX | 8000–8999 | Assigned | LIVEWIRE TELECOM, LLC | 509K | ENNIS | MT |
| 2025-02-18 | 406-900-9XXX | 9000–9999 | Assigned | LIVEWIRE TELECOM, LLC | 509K | ENNIS | MT |
| 2025-02-18 | 406-967-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | WORDEN | MT |
| 2025-02-13 | 406-536-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | BOZEMAN | MT |
| 2025-02-13 | 406-818-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | RED LODGE | MT |
| 2025-02-10 | 406-348-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | HUNTLEY | MT |
| 2025-02-03 | 406-217-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | GREATFALLS | MT |
| 2025-02-03 | 406-517-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | LIVINGSTON | MT |
| 2025-02-03 | 406-610-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | MISSOULA | MT |
| 2025-02-03 | 406-677-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | SEELEYLAKE | MT |
| 2025-01-31 | 406-324-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | HELENA | MT |
| 2025-01-24 | 406-536-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BOZEMAN | MT |
| 2025-01-24 | 406-872-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | POLSON | MT |
| 2025-01-16 | 406-699-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HARDIN | MT |
| 2025-01-16 | 406-951-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILES CITY | MT |
| 2025-01-14 | 406-593-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BUTTE | MT |
| 2025-01-14 | 406-593-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BUTTE | MT |
| 2025-01-14 | 406-610-7XXX | 7000–7999 | Assigned | NUSO, LLC | 732J | MISSOULA | MT |
| 2025-01-13 | 406-517-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LIVINGSTON | MT |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.