NumberResearchRecent thousands-block assignments
43 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 435
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 |
|---|---|---|---|---|---|---|---|
| 2025-04-02 | 435-701-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | CEDAR CITY | UT |
| 2025-03-27 | 435-600-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PAROWAN | UT |
| 2025-03-14 | 435-278-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ENTERPRISE | UT |
| 2025-03-07 | 435-346-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PARK CITY | UT |
| 2025-03-06 | 435-328-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2025-03-03 | 435-362-0XXX | 0000–0999 | Assigned | E. FIBER MOAB, LLC | 831J | THOMPSON | UT |
| 2025-02-19 | 435-360-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2025-02-12 | 435-354-1XXX | 1000–1999 | Assigned | ONVOY, LLC - UT | 871E | TOOELE | UT |
| 2025-01-21 | 435-348-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | FILLMORE | UT |
| 2025-01-15 | 435-249-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TOOELE | UT |
| 2025-01-15 | 435-250-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEPHI | UT |
| 2025-01-15 | 435-363-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LOGAN | UT |
| 2025-01-15 | 435-565-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PARK CITY | UT |
| 2024-12-26 | 435-244-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | TOOELE | UT |
| 2024-12-26 | 435-271-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALINA | UT |
| 2024-12-26 | 435-324-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HEBER CITY | UT |
| 2024-12-26 | 435-341-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MONROE | UT |
| 2024-12-26 | 435-361-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOGAN | UT |
| 2024-12-26 | 435-567-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | RICHFIELD | UT |
| 2024-12-26 | 435-681-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEPHI | UT |
| 2024-12-20 | 435-346-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PARK CITY | UT |
| 2024-12-20 | 435-361-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LOGAN | UT |
| 2024-12-16 | 435-324-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HEBER CITY | UT |
| 2024-12-16 | 435-491-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BICKNELL | UT |
| 2024-12-06 | 435-328-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2024-12-06 | 435-328-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2024-12-06 | 435-352-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | HEBER CITY | UT |
| 2024-12-06 | 435-358-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | COALVILLE | UT |
| 2024-12-02 | 435-523-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2024-10-23 | 435-314-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | EPHRAIM | UT |
| 2024-10-23 | 435-549-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | VERNAL | UT |
| 2024-10-17 | 435-346-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PARK CITY | UT |
| 2024-10-09 | 435-341-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | MONROE | UT |
| 2024-10-09 | 435-708-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | CEDAR CITY | UT |
| 2024-10-09 | 435-732-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | TREMONTON | UT |
| 2024-09-27 | 435-348-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | FILLMORE | UT |
| 2024-09-26 | 435-278-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ENTERPRISE | UT |
| 2024-09-19 | 435-361-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | LOGAN | UT |
| 2024-09-17 | 435-221-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BEAVER | UT |
| 2024-09-17 | 435-221-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BEAVER | UT |
| 2024-09-17 | 435-421-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BEAVER | UT |
| 2024-09-06 | 435-746-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | KAMAS | UT |
| 2024-08-28 | 435-328-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2024-08-28 | 435-328-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2024-08-15 | 435-360-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2024-08-13 | 435-819-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | KANAB | UT |
| 2024-08-05 | 435-361-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | LOGAN | UT |
| 2024-07-17 | 435-354-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TOOELE | UT |
| 2024-07-08 | 435-732-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TREMONTON | UT |
| 2024-07-02 | 435-278-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ENTERPRISE | UT |
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.