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 |
|---|---|---|---|---|---|---|---|
| 2008-12-01 | 435-849-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TOOELE | UT |
| 2008-11-17 | 435-219-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2008-11-17 | 435-219-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2008-11-12 | 435-401-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ROOSEVELT | UT |
| 2008-10-30 | 435-219-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VERNAL | UT |
| 2008-10-30 | 435-277-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | TOOELE | UT |
| 2008-10-30 | 435-494-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | BRIGHAM CY | UT |
| 2008-10-30 | 435-535-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | LOGAN | UT |
| 2008-10-30 | 435-554-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | LOGAN | UT |
| 2008-10-30 | 435-565-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | PARK CITY | UT |
| 2008-10-30 | 435-572-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | CEDAR CITY | UT |
| 2008-10-30 | 435-610-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | NEPHI | UT |
| 2008-10-30 | 435-612-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | MONROE | UT |
| 2008-10-30 | 435-625-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | BEAVER | UT |
| 2008-10-30 | 435-633-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | RICHFIELD | UT |
| 2008-10-30 | 435-709-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | HEBER CITY | UT |
| 2008-10-30 | 435-767-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | ST GEORGE | UT |
| 2008-10-30 | 435-932-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | LOGAN | UT |
| 2008-10-13 | 435-503-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | HEBER CITY | UT |
| 2008-10-08 | 435-275-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2008-09-24 | 435-374-4XXX | 4000–4999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2008-09-15 | 435-627-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9636 | ST GEORGE | UT |
| 2008-09-10 | 435-703-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2008-09-04 | 435-503-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | HEBER CITY | UT |
| 2008-09-04 | 435-592-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | CEDAR CITY | UT |
| 2008-08-05 | 435-609-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CASTLEDALE | UT |
| 2008-08-05 | 435-630-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PRICE | UT |
| 2008-08-05 | 435-890-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | LOGAN | UT |
| 2008-07-02 | 435-275-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | ST GEORGE | UT |
| 2008-07-01 | 435-657-6XXX | 6000–6999 | Assigned | ALL WEST/UTAH, INC. | 3881 | HEBER CITY | UT |
| 2008-06-26 | 435-538-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | BRIGHAM CY | UT |
| 2008-06-24 | 435-363-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LOGAN | UT |
| 2008-06-24 | 435-363-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LOGAN | UT |
| 2008-06-09 | 435-275-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - UT | 117F | ST GEORGE | UT |
| 2008-06-04 | 435-401-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ROOSEVELT | UT |
| 2008-06-04 | 435-773-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2008-06-03 | 435-219-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2008-05-15 | 435-249-4XXX | 4000–4999 | Assigned | ONVOY, LLC - UT | 871E | TOOELE | UT |
| 2008-05-15 | 435-363-7XXX | 7000–7999 | Assigned | ONVOY, LLC - UT | 871E | LOGAN | UT |
| 2008-05-15 | 435-565-2XXX | 2000–2999 | Assigned | ONVOY, LLC - UT | 871E | PARK CITY | UT |
| 2008-04-29 | 435-817-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2008-04-16 | 435-535-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | LOGAN | UT |
| 2008-04-16 | 435-938-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | LOGAN | UT |
| 2008-03-24 | 435-267-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | CEDAR CITY | UT |
| 2008-03-24 | 435-657-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | HEBER CITY | UT |
| 2008-03-19 | 435-213-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | LOGAN | UT |
| 2008-03-19 | 435-287-0XXX | 0000–0999 | Assigned | CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV | 791D | RICHFIELD | UT |
| 2008-03-19 | 435-287-1XXX | 1000–1999 | Assigned | CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV | 791D | RICHFIELD | UT |
| 2008-03-19 | 435-287-2XXX | 2000–2999 | Assigned | CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV | 791D | RICHFIELD | UT |
| 2008-03-19 | 435-849-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TOOELE | 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.