NumberResearchRecent thousands-block assignments
0 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, all time — NPA 817
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-06-16 | 817-328-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAPEVINE | TX |
| 2026-06-16 | 817-748-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAPEVINE | TX |
| 2026-04-02 | 817-520-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2026-04-02 | 817-520-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2026-04-02 | 817-520-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2026-04-02 | 817-520-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2026-04-02 | 817-728-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MANSFIELD | TX |
| 2025-08-07 | 817-450-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-450-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-450-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-750-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-750-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-750-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-750-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-750-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-750-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-24 | 817-750-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-06-06 | 817-743-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-06-06 | 817-743-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-06-06 | 817-743-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-06-06 | 817-743-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-06-06 | 817-747-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-04-28 | 817-743-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-04-28 | 817-743-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-04-28 | 817-743-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-04-08 | 817-256-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-256-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-720-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-04-08 | 817-747-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-04-08 | 817-747-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-04-08 | 817-747-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | NRICHLDHLS | TX |
| 2025-01-29 | 817-749-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAPEVINE | TX |
| 2025-01-29 | 817-749-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAPEVINE | TX |
| 2025-01-29 | 817-749-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAPEVINE | TX |
| 2025-01-27 | 817-423-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-01-27 | 817-489-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-01-27 | 817-744-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-01-27 | 817-750-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-01-27 | 817-971-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | FORT WORTH | TX |
| 2025-01-16 | 817-494-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | EULESS | TX |
| 2025-01-16 | 817-494-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | EULESS | TX |
| 2025-01-16 | 817-494-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | EULESS | TX |
| 2024-09-05 | 817-494-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | EULESS | TX |
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.