NumberResearchRecent thousands-block assignments
12 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 531
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 |
|---|---|---|---|---|---|---|---|
| 2025-03-27 | 531-373-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | HEBRON | NE |
| 2025-03-27 | 531-374-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | VALENTINE | NE |
| 2025-03-27 | 531-377-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | WAHOO | NE |
| 2025-03-27 | 531-388-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | AURORA | NE |
| 2025-03-27 | 531-394-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ASHLAND | NE |
| 2025-03-26 | 531-223-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | HOWELLS | NE |
| 2025-03-26 | 531-313-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HASTINGS | NE |
| 2025-03-26 | 531-330-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | WAYNE | NE |
| 2025-03-26 | 531-357-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | AINSWORTH | NE |
| 2025-03-26 | 531-360-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | ALBION | NE |
| 2025-03-26 | 531-390-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CREIGHTON | NE |
| 2025-03-26 | 531-391-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SCHUYLER | NE |
| 2025-03-26 | 531-392-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | WEST POINT | NE |
| 2025-03-21 | 531-379-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-379-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-379-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-379-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-379-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-379-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-379-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-379-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-380-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-381-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-382-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
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.