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 |
|---|---|---|---|---|---|---|---|
| 2025-10-07 | 435-538-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHAM CY | UT |
| 2025-09-23 | 435-366-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ST GEORGE | UT |
| 2025-09-18 | 435-368-0XXX | 0000–0999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2025-09-12 | 435-366-2XXX | 2000–2999 | Assigned | TDS BROADBAND SERVICE LLC | 641H | ST GEORGE | UT |
| 2025-09-11 | 435-701-3XXX | 3000–3999 | Assigned | TDS BROADBAND SERVICE LLC | 641H | CEDAR CITY | UT |
| 2025-08-28 | 435-328-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2025-08-28 | 435-365-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2025-08-28 | 435-365-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2025-08-20 | 435-294-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LOGAN | UT |
| 2025-08-19 | 435-295-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHAM CY | UT |
| 2025-08-19 | 435-730-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHAM CY | UT |
| 2025-08-06 | 435-343-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MANILA | UT |
| 2025-07-17 | 435-360-4XXX | 4000–4999 | Assigned | SOUTH CENTRAL COMM -TELCOM SERVICES, LLC UT | 380F | ST GEORGE | UT |
| 2025-06-18 | 435-667-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHAM CY | UT |
| 2025-06-16 | 435-209-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILFORD | UT |
| 2025-06-16 | 435-212-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HILDALE | UT |
| 2025-06-16 | 435-242-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GREENRIVER | UT |
| 2025-06-16 | 435-282-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TREMONTON | UT |
| 2025-06-16 | 435-314-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EPHRAIM | UT |
| 2025-06-16 | 435-322-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DUCHESNE | UT |
| 2025-06-16 | 435-323-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PARKVALLEY | UT |
| 2025-06-16 | 435-330-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CANNONVL | UT |
| 2025-06-16 | 435-331-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DUCK CREEK | UT |
| 2025-06-16 | 435-332-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HANKSVILLE | UT |
| 2025-06-16 | 435-337-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LAKEPOWELL | UT |
| 2025-06-16 | 435-459-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTICELLO | UT |
| 2025-06-16 | 435-469-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MTPLEASANT | UT |
| 2025-06-16 | 435-618-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PANGUITCH | UT |
| 2025-06-16 | 435-621-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | VERNAL | UT |
| 2025-06-16 | 435-626-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SNOWVILLE | UT |
| 2025-06-16 | 435-724-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROOSEVELT | UT |
| 2025-06-16 | 435-749-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CASTLEDALE | UT |
| 2025-06-16 | 435-819-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KANAB | UT |
| 2025-06-16 | 435-820-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PRICE | UT |
| 2025-06-06 | 435-360-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2025-06-06 | 435-360-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2025-06-04 | 435-288-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2025-06-04 | 435-360-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2025-05-21 | 435-361-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | LOGAN | UT |
| 2025-05-16 | 435-289-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHFIELD | UT |
| 2025-05-15 | 435-328-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2025-05-15 | 435-328-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2025-05-15 | 435-691-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CEDAR CITY | UT |
| 2025-05-12 | 435-309-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF UTAH, LLC - UT | 526H | GLNCNYONCY | UT |
| 2025-04-29 | 435-354-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TOOELE | UT |
| 2025-04-29 | 435-354-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TOOELE | UT |
| 2025-04-22 | 435-317-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOGAN | UT |
| 2025-04-22 | 435-361-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOGAN | UT |
| 2025-04-22 | 435-534-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOGAN | UT |
| 2025-04-08 | 435-749-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CASTLEDALE | 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.