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 539
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 | 539-347-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-347-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-347-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-347-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-347-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-347-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-347-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-347-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-10 | 539-349-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-317-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-318-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-319-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-320-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
| 2025-03-05 | 539-320-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - OK | 6272 | TULSA | OK |
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.