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 417
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-11-13 | 417-381-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NEVADA | MO |
| 2023-11-13 | 417-381-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | NEVADA | MO |
| 2023-11-13 | 417-397-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SPRINGFLD | MO |
| 2023-11-13 | 417-397-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | SPRINGFLD | MO |
| 2023-11-13 | 417-449-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | NIXA | MO |
| 2023-11-13 | 417-449-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | NIXA | MO |
| 2023-11-13 | 417-514-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CARTHAGE | MO |
| 2023-11-13 | 417-514-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | CARTHAGE | MO |
| 2023-11-13 | 417-560-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | WEBB CITY | MO |
| 2023-11-13 | 417-560-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | WEBB CITY | MO |
| 2023-11-13 | 417-601-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | MONETT | MO |
| 2023-11-13 | 417-601-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | MONETT | MO |
| 2023-11-13 | 417-629-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | JOPLIN | MO |
| 2023-11-13 | 417-629-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | JOPLIN | MO |
| 2023-11-13 | 417-735-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | REPUBLIC | MO |
| 2023-11-13 | 417-735-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | REPUBLIC | MO |
| 2022-01-05 | 417-321-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | NEVADA | MO |
| 2022-01-05 | 417-346-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | NEOSHO | MO |
| 2022-01-05 | 417-374-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | NIXA | MO |
| 2022-01-05 | 417-526-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CARTHAGE | MO |
| 2022-01-05 | 417-601-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MONETT | MO |
| 2022-01-05 | 417-609-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WEBB CITY | MO |
| 2022-01-05 | 417-706-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | JOPLIN | MO |
| 2022-01-05 | 417-735-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | REPUBLIC | MO |
| 2020-12-04 | 417-605-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SPRINGFLD | MO |
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.