NumberResearchRecent thousands-block assignments
43 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2024-06-12 | 435-691-6XXX | 6000–6999 | Assigned | ONVOY, LLC - UT | 871E | CEDAR CITY | UT |
| 2024-06-05 | 435-361-9XXX | 9000–9999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2024-05-31 | 435-357-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ST GEORGE | UT |
| 2024-05-31 | 435-360-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ST GEORGE | UT |
| 2024-05-31 | 435-567-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHFIELD | UT |
| 2024-05-29 | 435-731-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PARK CITY | UT |
| 2024-05-29 | 435-740-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BRIGHAM CY | UT |
| 2024-05-23 | 435-328-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2024-05-21 | 435-238-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | CEDAR CITY | UT |
| 2024-05-21 | 435-357-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2024-05-21 | 435-358-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | COALVILLE | UT |
| 2024-05-15 | 435-301-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2024-05-15 | 435-351-3XXX | 3000–3999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2024-04-30 | 435-667-6XXX | 6000–6999 | Assigned | ONVOY, LLC - UT | 871E | BRIGHAM CY | UT |
| 2024-04-25 | 435-361-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | LOGAN | UT |
| 2024-04-17 | 435-354-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | TOOELE | UT |
| 2024-04-09 | 435-288-6XXX | 6000–6999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2024-04-08 | 435-477-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | PAROWAN | UT |
| 2024-04-08 | 435-531-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | CEDAR CITY | UT |
| 2024-04-04 | 435-358-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | COALVILLE | UT |
| 2024-04-04 | 435-358-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | COALVILLE | UT |
| 2024-04-04 | 435-699-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PARK CITY | UT |
| 2024-03-18 | 435-317-4XXX | 4000–4999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2024-03-18 | 435-361-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2024-02-26 | 435-357-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2024-02-20 | 435-221-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF UTAH, LLC - UT | 526H | BEAVER | UT |
| 2024-02-20 | 435-357-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF UTAH, LLC - UT | 526H | ST GEORGE | UT |
| 2024-01-22 | 435-621-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | VERNAL | UT |
| 2024-01-16 | 435-314-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | EPHRAIM | UT |
| 2024-01-12 | 435-317-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LOGAN | UT |
| 2024-01-12 | 435-357-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2024-01-12 | 435-357-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2024-01-08 | 435-357-2XXX | 2000–2999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2023-12-18 | 435-354-2XXX | 2000–2999 | Assigned | VONAGE AMERICA LLC | 197D | TOOELE | UT |
| 2023-12-18 | 435-549-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2023-11-29 | 435-301-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | ST GEORGE | UT |
| 2023-11-29 | 435-357-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | ST GEORGE | UT |
| 2023-11-17 | 435-324-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | HEBER CITY | UT |
| 2023-11-03 | 435-324-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2023-10-26 | 435-357-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2023-10-25 | 435-317-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | LOGAN | UT |
| 2023-10-06 | 435-549-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2023-10-04 | 435-276-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BLANDING | UT |
| 2023-09-27 | 435-324-4XXX | 4000–4999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2023-09-27 | 435-324-5XXX | 5000–5999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2023-09-27 | 435-324-6XXX | 6000–6999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2023-09-27 | 435-324-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2023-09-27 | 435-324-8XXX | 8000–8999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2023-09-27 | 435-432-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | PROMONTORY | UT |
| 2023-09-27 | 435-432-5XXX | 5000–5999 | Assigned | ONVOY, LLC - UT | 871E | PROMONTORY | UT |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.