NumberResearchRecent thousands-block assignments
4 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 414
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 |
|---|---|---|---|---|---|---|---|
| 2025-03-07 | 414-504-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-504-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-07 | 414-505-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-452-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-457-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
| 2025-03-05 | 414-468-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MILWAUKZN1 | WI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.