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 |
|---|---|---|---|---|---|---|---|
| 2025-03-21 | 531-382-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-384-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-385-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-386-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-387-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-388-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-388-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-388-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-388-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-21 | 531-388-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | AURORA | NE |
| 2025-03-20 | 531-246-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SUPERIOR | NE |
| 2025-03-20 | 531-251-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | DAWSON | NE |
| 2025-03-20 | 531-287-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | AUBURN | NE |
| 2025-03-20 | 531-291-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CRETE | NE |
| 2025-03-20 | 531-302-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | TECUMSEH | 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.