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 572
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 |
|---|---|---|---|---|---|---|---|
| 2025-03-10 | 572-253-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-253-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-254-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-255-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-256-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
| 2025-03-10 | 572-257-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | OKLA CITY | OK |
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.