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 |
|---|---|---|---|---|---|---|---|
| 2026-05-05 | 435-407-3XXX | 3000–3999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | TABIONA | UT |
| 2026-05-05 | 435-407-4XXX | 4000–4999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | TABIONA | UT |
| 2026-05-05 | 435-407-5XXX | 5000–5999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | TABIONA | UT |
| 2026-05-05 | 435-407-6XXX | 6000–6999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | TABIONA | UT |
| 2026-05-05 | 435-407-7XXX | 7000–7999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | TABIONA | UT |
| 2026-05-05 | 435-407-8XXX | 8000–8999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | TABIONA | UT |
| 2026-05-05 | 435-407-9XXX | 9000–9999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | TABIONA | UT |
| 2026-05-05 | 435-408-0XXX | 0000–0999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-1XXX | 1000–1999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-2XXX | 2000–2999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-3XXX | 3000–3999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-4XXX | 4000–4999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-5XXX | 5000–5999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-6XXX | 6000–6999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-7XXX | 7000–7999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-8XXX | 8000–8999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-408-9XXX | 9000–9999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ALTAMONT | UT |
| 2026-05-05 | 435-410-0XXX | 0000–0999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-1XXX | 1000–1999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-2XXX | 2000–2999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-3XXX | 3000–3999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-4XXX | 4000–4999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-5XXX | 5000–5999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-6XXX | 6000–6999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-7XXX | 7000–7999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-8XXX | 8000–8999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-05-05 | 435-410-9XXX | 9000–9999 | Assigned | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | RANDLETT | UT |
| 2026-04-29 | 435-365-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2026-04-29 | 435-365-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HEBER CITY | UT |
| 2026-04-29 | 435-366-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ST GEORGE | UT |
| 2026-04-29 | 435-366-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ST GEORGE | UT |
| 2026-04-24 | 435-368-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF UTAH, LLC - UT | 526H | LOGAN | UT |
| 2026-03-24 | 435-366-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2026-03-24 | 435-366-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ST GEORGE | UT |
| 2026-02-25 | 435-278-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | ENTERPRISE | UT |
| 2026-02-25 | 435-366-3XXX | 3000–3999 | Assigned | WIDE VOICE, LLC - UT | 659H | ST GEORGE | UT |
| 2026-02-25 | 435-366-4XXX | 4000–4999 | Assigned | WIDE VOICE, LLC - UT | 659H | ST GEORGE | UT |
| 2026-02-17 | 435-212-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HILDALE | UT |
| 2026-02-17 | 435-240-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WENDOVER | UT |
| 2026-02-17 | 435-282-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TREMONTON | UT |
| 2026-02-17 | 435-401-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROOSEVELT | UT |
| 2026-02-17 | 435-459-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTICELLO | UT |
| 2026-02-17 | 435-820-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PRICE | UT |
| 2026-02-04 | 435-361-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LOGAN | UT |
| 2026-01-13 | 435-304-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | RICHFIELD | UT |
| 2026-01-13 | 435-514-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LOGAN | UT |
| 2025-12-18 | 435-221-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BEAVER | UT |
| 2025-12-03 | 435-369-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHAM CY | UT |
| 2025-10-22 | 435-360-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | UT |
| 2025-10-22 | 435-360-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ST GEORGE | 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.