NumberResearchRecent thousands-block assignments
9 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, last 30 days — NPA 515
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Feb 2026
Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2002-12-12 | 515-208-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DES MOINES | IA |
| 2002-10-31 | 515-293-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | EAGLEGROVE | IA |
| 2002-10-31 | 515-293-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | EAGLEGROVE | IA |
| 2002-10-31 | 515-293-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | EAGLEGROVE | IA |
| 2002-10-31 | 515-297-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WEBSTER CY | IA |
| 2002-10-31 | 515-297-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WEBSTER CY | IA |
| 2002-10-31 | 515-297-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WEBSTER CY | IA |
| 2002-10-31 | 515-297-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WEBSTER CY | IA |
| 2002-10-31 | 515-297-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WEBSTER CY | IA |
| 2002-08-21 | 515-508-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2002-08-21 | 515-508-3XXX | 3000–3999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2002-08-21 | 515-508-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2002-08-21 | 515-508-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2002-08-21 | 515-508-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2002-08-21 | 515-508-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2002-08-21 | 515-508-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2001-09-27 | 515-220-4XXX | 4000–4999 | Assigned | HUXLEY COMMUNICATIONS COOPERATIVE - IA | 5852 | CAMBRIDGE | IA |
| 2001-09-27 | 515-228-3XXX | 3000–3999 | Assigned | HUXLEY COMMUNICATIONS COOPERATIVE - IA | 5852 | SLATER | IA |
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.