NumberResearchRecent thousands-block assignments
0 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, all time — NPA 641
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-06-02 | 641-440-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CLEAR LAKE | IA |
| 2025-06-02 | 641-541-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | SIGOURNEY | IA |
| 2025-05-02 | 641-204-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-416-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-416-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-416-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-416-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-613-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-613-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-613-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-613-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-613-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-619-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-619-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-619-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-619-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-05-02 | 641-619-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | PELLA | IA |
| 2025-03-21 | 641-706-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-706-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-718-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-729-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-770-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-770-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-770-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
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.