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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-08-27 | 641-238-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GENEVA | IA |
| 2025-08-27 | 641-250-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MANLY | IA |
| 2025-08-27 | 641-254-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | NASHUA | IA |
| 2025-08-27 | 641-300-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | OSAGE | IA |
| 2025-08-27 | 641-310-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MARSHALLTN | IA |
| 2025-08-27 | 641-324-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | NORTHWOOD | IA |
| 2025-08-27 | 641-334-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ROSE HILL | IA |
| 2025-08-27 | 641-513-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MASON CITY | IA |
| 2025-08-27 | 641-575-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | OTTUMWA | IA |
| 2025-08-27 | 641-802-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | HAMPTON | IA |
| 2025-08-27 | 641-810-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | OSKALOOSA | IA |
| 2025-08-27 | 641-825-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | IOWA FALLS | IA |
| 2025-08-26 | 641-281-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | CHARLES CY | IA |
| 2025-08-26 | 641-924-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GARNER | IA |
| 2025-07-23 | 641-222-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BRITT | IA |
| 2025-07-23 | 641-266-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ACKLEY | 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.