NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026
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 326
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 |
|---|---|---|---|---|---|---|---|
| 2025-09-16 | 326-230-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | YLSPGCLFTN | OH |
| 2025-09-16 | 326-230-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | YLSPGCLFTN | OH |
| 2025-05-07 | 326-900-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | YLSPGCLFTN | OH |
| 2024-02-20 | 326-208-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LIBERTY | OH |
| 2024-02-20 | 326-217-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ENGLEWOOD | OH |
| 2024-02-20 | 326-217-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ENGLEWOOD | OH |
| 2024-02-20 | 326-300-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PEEBLES | OH |
| 2024-02-20 | 326-336-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | VANDALIA | OH |
| 2024-02-20 | 326-900-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | YLSPGCLFTN | OH |
| 2023-12-01 | 326-777-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GEORGETOWN | OH |
| 2023-11-14 | 326-867-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | TROTWOOD | OH |
| 2023-10-11 | 326-214-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | FRANKLIN | OH |
| 2023-10-11 | 326-214-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | FRANKLIN | OH |
| 2023-07-05 | 326-209-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | NEWCARLISL | OH |
| 2021-05-24 | 326-467-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2021-05-24 | 326-467-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2021-05-24 | 326-467-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2021-05-24 | 326-467-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2021-05-24 | 326-467-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2021-05-24 | 326-467-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2021-05-24 | 326-467-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.