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 |
|---|---|---|---|---|---|---|---|
| 2008-02-26 | 435-401-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ROOSEVELT | UT |
| 2008-02-12 | 435-272-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2008-02-12 | 435-630-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PRICE | UT |
| 2008-02-12 | 435-633-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | RICHFIELD | UT |
| 2008-02-01 | 435-272-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | ST GEORGE | UT |
| 2008-02-01 | 435-272-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | ST GEORGE | UT |
| 2008-01-31 | 435-227-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | LOGAN | UT |
| 2008-01-31 | 435-227-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | LOGAN | UT |
| 2008-01-22 | 435-216-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | ST GEORGE | UT |
| 2008-01-22 | 435-363-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | LOGAN | UT |
| 2008-01-22 | 435-363-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | LOGAN | UT |
| 2008-01-17 | 435-216-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | ST GEORGE | UT |
| 2008-01-16 | 435-227-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | LOGAN | UT |
| 2008-01-09 | 435-704-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | CEDAR CITY | UT |
| 2008-01-07 | 435-754-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LOGAN | UT |
| 2007-12-17 | 435-705-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2007-12-12 | 435-817-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2007-11-21 | 435-219-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2007-11-21 | 435-219-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2007-11-13 | 435-406-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | DELTA | UT |
| 2007-10-25 | 435-374-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LOGAN | UT |
| 2007-10-25 | 435-374-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LOGAN | UT |
| 2007-10-18 | 435-412-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | GLNCNYONCY | UT |
| 2007-10-12 | 435-210-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | MOAB | UT |
| 2007-10-12 | 435-890-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | LOGAN | UT |
| 2007-10-04 | 435-237-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHAM CY | UT |
| 2007-09-18 | 435-213-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LOGAN | UT |
| 2007-09-11 | 435-216-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2007-09-11 | 435-216-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2007-09-04 | 435-531-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | CEDAR CITY | UT |
| 2007-08-16 | 435-256-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | ST GEORGE | UT |
| 2007-08-16 | 435-256-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | ST GEORGE | UT |
| 2007-08-16 | 435-256-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | ST GEORGE | UT |
| 2007-08-15 | 435-713-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LOGAN | UT |
| 2007-08-15 | 435-817-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2007-08-08 | 435-249-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | TOOELE | UT |
| 2007-08-08 | 435-609-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | CASTLEDALE | UT |
| 2007-08-08 | 435-841-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | TOOELE | UT |
| 2007-08-07 | 435-660-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NEPHI | UT |
| 2007-08-01 | 435-213-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOGAN | UT |
| 2007-08-01 | 435-724-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ROOSEVELT | UT |
| 2007-07-14 | 435-219-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VERNAL | UT |
| 2007-07-13 | 435-216-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ST GEORGE | UT |
| 2007-06-18 | 435-230-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | BEARRIV CY | UT |
| 2007-06-18 | 435-503-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | HEBER CITY | UT |
| 2007-06-18 | 435-553-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | BRIGHAM CY | UT |
| 2007-06-18 | 435-630-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PRICE | UT |
| 2007-06-18 | 435-704-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | CEDAR CITY | UT |
| 2007-06-15 | 435-705-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2007-06-15 | 435-705-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | 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.