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 |
|---|---|---|---|---|---|---|---|
| 2007-06-06 | 435-890-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | LOGAN | UT |
| 2007-05-23 | 435-213-8XXX | 8000–8999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2007-05-23 | 435-705-5XXX | 5000–5999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2007-05-14 | 435-709-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | HEBER CITY | UT |
| 2007-04-24 | 435-292-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | WASATCH | UT |
| 2007-04-17 | 435-272-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | ST GEORGE | UT |
| 2007-04-16 | 435-212-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HILDALE | UT |
| 2007-04-16 | 435-868-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CEDAR CITY | UT |
| 2007-04-06 | 435-256-6XXX | 6000–6999 | Assigned | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | ST GEORGE | UT |
| 2007-03-22 | 435-612-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | MONROE | UT |
| 2007-03-22 | 435-625-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | BEAVER | UT |
| 2007-02-27 | 435-817-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2007-02-19 | 435-562-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | SALINA | UT |
| 2007-02-19 | 435-710-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | PAROWAN | UT |
| 2007-02-19 | 435-990-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | BRIAN HEAD | UT |
| 2007-02-09 | 435-201-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | RICHFIELD | UT |
| 2007-02-09 | 435-659-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | PARK CITY | UT |
| 2007-02-09 | 435-671-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | HEBER CITY | UT |
| 2007-02-06 | 435-503-3XXX | 3000–3999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2007-02-01 | 435-754-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LOGAN | UT |
| 2007-01-31 | 435-553-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHAM CY | UT |
| 2007-01-18 | 435-705-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2007-01-18 | 435-705-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2007-01-11 | 435-724-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ROOSEVELT | UT |
| 2007-01-05 | 435-277-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9636 | TOOELE | UT |
| 2007-01-05 | 435-277-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9636 | TOOELE | UT |
| 2006-12-14 | 435-728-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | TOOELE | UT |
| 2006-12-12 | 435-250-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | NEPHI | UT |
| 2006-12-12 | 435-256-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | ST GEORGE | UT |
| 2006-11-01 | 435-252-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | PARK CITY | UT |
| 2006-10-24 | 435-879-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | ST GEORGE | UT |
| 2006-10-23 | 435-538-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRIGHAM CY | UT |
| 2006-10-23 | 435-744-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRIGHAM CY | UT |
| 2006-10-12 | 435-249-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | TOOELE | UT |
| 2006-10-12 | 435-256-8XXX | 8000–8999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2006-10-12 | 435-633-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | RICHFIELD | UT |
| 2006-10-12 | 435-660-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | NEPHI | UT |
| 2006-10-12 | 435-729-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | PARK CITY | UT |
| 2006-10-12 | 435-915-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2006-10-12 | 435-938-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2006-10-10 | 435-216-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2006-10-10 | 435-238-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | CEDAR CITY | UT |
| 2006-10-10 | 435-239-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | BRIGHAM CY | UT |
| 2006-10-10 | 435-554-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2006-10-10 | 435-709-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | HEBER CITY | UT |
| 2006-10-10 | 435-754-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2006-10-06 | 435-817-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2006-10-04 | 435-201-8XXX | 8000–8999 | Assigned | ONVOY, LLC - UT | 871E | RICHFIELD | UT |
| 2006-10-04 | 435-538-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | BRIGHAM CY | UT |
| 2006-09-22 | 435-884-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9636 | TOOELE | 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.