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 309
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-10-17 | 309-380-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | ROCKISLAND | IL |
| 2025-01-30 | 309-295-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-313-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-313-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-318-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-421-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-421-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-588-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-588-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-588-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-588-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-730-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-730-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-730-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-731-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-731-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-731-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-731-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-833-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-836-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2025-01-30 | 309-837-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2024-11-23 | 309-217-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-217-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-217-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-217-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-217-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-902-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-902-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-919-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-919-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-11-23 | 309-919-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEKIN | IL |
| 2024-10-07 | 309-280-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-390-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-390-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-390-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-802-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-810-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-810-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-835-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-835-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-835-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-844-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-877-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-877-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-892-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-916-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-917-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-917-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-917-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-931-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
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.