NumberResearchRecent thousands-block assignments
11 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, last 30 days — NPA 309
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-10-24 | 309-701-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SPRING BAY | IL |
| 2024-10-22 | 309-730-1XXX | 1000–1999 | Assigned | NUSO, LLC | 732J | MACOMB | IL |
| 2024-10-17 | 309-380-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROCKISLAND | IL |
| 2024-10-14 | 309-400-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROCKISLAND | IL |
| 2024-10-14 | 309-668-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CANTON | 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 |
| 2024-10-07 | 309-931-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-931-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-943-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-943-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-943-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-07 | 309-943-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | PEORIA | IL |
| 2024-10-02 | 309-331-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2024-10-02 | 309-331-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2024-10-02 | 309-331-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2024-10-02 | 309-331-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2024-10-02 | 309-331-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - IL | 6265 | MACOMB | IL |
| 2024-09-19 | 309-390-0XXX | 0000–0999 | Assigned | LEAP TELECOM, LLC | 616J | PEORIA | IL |
| 2024-09-18 | 309-802-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | PEORIA | IL |
| 2024-09-18 | 309-917-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEORIA | IL |
| 2024-09-18 | 309-917-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEORIA | IL |
| 2024-09-10 | 309-524-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MOLINE | IL |
| 2024-09-10 | 309-757-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | MOLINE | IL |
| 2024-09-09 | 309-718-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BLOOMINGTN | IL |
| 2024-08-30 | 309-877-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEORIA | IL |
| 2024-08-22 | 309-459-6XXX | 6000–6999 | Assigned | NUSO, LLC | 732J | BLOOMINGTN | IL |
| 2024-08-22 | 309-917-4XXX | 4000–4999 | Assigned | NUSO, LLC | 732J | PEORIA | IL |
| 2024-08-13 | 309-880-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | IPAVA | IL |
| 2024-08-13 | 309-942-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SAN JOSE | IL |
| 2024-08-07 | 309-488-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | FARMERCITY | IL |
| 2024-07-16 | 309-489-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | GENESEO | IL |
| 2024-07-16 | 309-632-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DELAVAN | 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.