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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-02-11 | 417-482-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-482-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-482-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-482-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-482-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-482-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-486-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-506-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-506-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-506-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-506-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-506-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-506-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-506-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-536-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-571-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-02-11 | 417-571-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2025-01-30 | 417-263-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-263-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-263-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-266-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-266-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-320-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-320-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-320-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-320-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-331-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-331-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-331-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-412-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-412-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-412-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-412-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-412-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-412-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-460-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2025-01-30 | 417-460-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | BRANSON | MO |
| 2022-05-05 | 417-477-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MOUNTANGRV | MO |
| 2022-05-05 | 417-507-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | SPRINGFLD | MO |
| 2021-09-21 | 417-712-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | GAINESVL | MO |
| 2021-05-25 | 417-630-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MARSHFIELD | MO |
| 2021-01-27 | 417-606-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - MO | 6275 | MT VERNON | 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.