NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 815
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-01-09 | 815-281-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | GALENA | IL |
| 2026-01-09 | 815-281-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | GALENA | IL |
| 2026-01-09 | 815-312-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2026-01-09 | 815-312-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2026-01-09 | 815-312-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2026-01-09 | 815-312-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2026-01-09 | 815-312-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2025-01-13 | 815-380-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2025-01-13 | 815-380-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2024-10-21 | 815-706-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2024-10-21 | 815-706-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2024-10-21 | 815-706-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2023-12-28 | 815-650-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | FREEPORT | IL |
| 2022-11-16 | 815-930-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ELIZABETH | IL |
| 2022-11-16 | 815-930-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ELIZABETH | IL |
| 2021-09-01 | 815-821-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | FREEPORT | IL |
| 2020-09-03 | 815-930-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ELIZABETH | IL |
| 2018-08-02 | 815-858-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ELIZABETH | IL |
| 2015-07-30 | 815-858-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ELIZABETH | IL |
| 2004-10-08 | 815-994-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | DIXON | IL |
| 2004-10-08 | 815-994-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | DIXON | IL |
| 2004-10-08 | 815-994-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | DIXON | IL |
| 2004-09-30 | 815-977-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-09-30 | 815-977-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-09-29 | 815-213-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2004-09-29 | 815-213-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2004-06-25 | 815-281-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | GALENA | IL |
| 2004-06-25 | 815-281-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | GALENA | IL |
| 2004-06-25 | 815-281-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | GALENA | IL |
| 2004-06-25 | 815-281-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | GALENA | IL |
| 2004-06-10 | 815-858-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ELIZABETH | IL |
| 2004-06-10 | 815-858-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ELIZABETH | IL |
| 2004-03-09 | 815-590-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2004-03-09 | 815-590-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2004-03-09 | 815-590-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2004-03-09 | 815-590-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2004-03-09 | 815-590-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | STERLING | IL |
| 2004-03-07 | 815-601-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-03-07 | 815-601-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKFORD | IL |
| 2004-02-16 | 815-821-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | FREEPORT | IL |
| 2004-02-16 | 815-821-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | FREEPORT | IL |
| 2004-02-16 | 815-821-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | FREEPORT | IL |
| 2004-02-16 | 815-821-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | FREEPORT | IL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.