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 641
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 | 641-880-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-880-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-880-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-880-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-880-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-880-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-880-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-880-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-901-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-902-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-902-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-902-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-902-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-21 | 641-902-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | NEWHAMPTON | IA |
| 2025-03-20 | 641-503-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MOUNT AYR | IA |
| 2025-03-20 | 641-991-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | OSCEOLA | IA |
| 2025-03-20 | 641-991-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | OSCEOLA | IA |
| 2025-03-18 | 641-222-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BRITT | IA |
| 2025-03-06 | 641-218-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KNOXVILLE | IA |
| 2025-02-10 | 641-501-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MONTEZUMA | IA |
| 2025-01-21 | 641-440-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | CLEAR LAKE | IA |
| 2025-01-21 | 641-657-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | HAMPTON | IA |
| 2025-01-21 | 641-657-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | HAMPTON | IA |
| 2025-01-15 | 641-417-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | NEWTON | IA |
| 2024-12-26 | 641-776-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CHARITON | IA |
| 2024-12-26 | 641-849-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | ELDORA | IA |
| 2024-11-25 | 641-500-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | IOWA FALLS | IA |
| 2024-11-19 | 641-334-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROSE HILL | IA |
| 2024-11-18 | 641-215-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | OSKALOOSA | IA |
| 2024-11-18 | 641-310-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MARSHALLTN | IA |
| 2024-11-18 | 641-310-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARSHALLTN | IA |
| 2024-11-18 | 641-359-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | IOWA FALLS | IA |
| 2024-11-18 | 641-657-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | HAMPTON | IA |
| 2024-11-18 | 641-997-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | OTTUMWA | IA |
| 2024-11-11 | 641-513-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MASON CITY | IA |
| 2024-11-11 | 641-997-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | OTTUMWA | IA |
| 2024-11-11 | 641-997-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | OTTUMWA | IA |
| 2024-11-11 | 641-997-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | OTTUMWA | IA |
| 2024-11-11 | 641-997-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | OTTUMWA | IA |
| 2024-11-11 | 641-997-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | OTTUMWA | IA |
| 2024-11-01 | 641-242-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BLOOMFIELD | 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.