NumberResearchRecent thousands-block assignments
12 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 608
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2003-10-01 | 608-412-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | PRARIDCHIN | WI |
| 2003-10-01 | 608-432-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | WISCONDLLS | WI |
| 2003-10-01 | 608-432-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | WISCONDLLS | WI |
| 2003-10-01 | 608-432-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | WISCONDLLS | WI |
| 2003-10-01 | 608-432-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | WISCONDLLS | WI |
| 2003-09-10 | 608-658-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MADISON | WI |
| 2003-09-10 | 608-658-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MADISON | WI |
| 2003-09-09 | 608-628-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MADISON | WI |
| 2003-08-07 | 608-423-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CAMBRIDGE | WI |
| 2003-07-18 | 608-397-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LA CROSSE | WI |
| 2003-07-16 | 608-669-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MADISON | WI |
| 2003-07-09 | 608-628-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MADISON | WI |
| 2003-07-09 | 608-628-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MADISON | WI |
| — | 608-230-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MADISON | WI |
| — | 608-313-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BELOIT | WI |
| — | 608-451-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BANGOR | WI |
| — | 608-599-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | JUDA | WI |
| — | 608-612-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WEST SALEM | WI |
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.