NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026
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 821
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-03-27 | 821-529-3XXX | 3000–3999 | Assigned | ONVOY, LLC - SC | 548E | MCCORMICK | SC |
| 2025-12-31 | 821-821-4XXX | 4000–4999 | Assigned | ONVOY, LLC - SC | 548E | WILLIAMSTN | SC |
| 2025-12-31 | 821-821-7XXX | 7000–7999 | Assigned | ONVOY, LLC - SC | 548E | WILLIAMSTN | SC |
| 2025-12-24 | 821-800-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | PACOLET | SC |
| 2025-12-24 | 821-800-8XXX | 8000–8999 | Assigned | ONVOY, LLC - SC | 548E | PACOLET | SC |
| 2025-12-24 | 821-800-9XXX | 9000–9999 | Assigned | ONVOY, LLC - SC | 548E | PACOLET | SC |
| 2025-12-22 | 821-529-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | MCCORMICK | SC |
| 2025-12-22 | 821-529-9XXX | 9000–9999 | Assigned | ONVOY, LLC - SC | 548E | MCCORMICK | SC |
| 2025-08-21 | 821-666-6XXX | 6000–6999 | Assigned | ONVOY, LLC - SC | 548E | LAURENS | SC |
| 2025-08-21 | 821-666-7XXX | 7000–7999 | Assigned | ONVOY, LLC - SC | 548E | LAURENS | SC |
| 2025-07-14 | 821-222-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | SIMPSONVL | SC |
| 2025-07-14 | 821-222-2XXX | 2000–2999 | Assigned | ONVOY, LLC - SC | 548E | SIMPSONVL | SC |
| 2025-07-14 | 821-333-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | SPARTANBG | SC |
| 2025-07-14 | 821-333-3XXX | 3000–3999 | Assigned | ONVOY, LLC - SC | 548E | SPARTANBG | SC |
| 2025-07-14 | 821-444-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | LANDRUM | SC |
| 2025-07-14 | 821-444-4XXX | 4000–4999 | Assigned | ONVOY, LLC - SC | 548E | LANDRUM | SC |
| 2025-01-14 | 821-777-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | ANDERSON | SC |
| 2025-01-14 | 821-777-7XXX | 7000–7999 | Assigned | ONVOY, LLC - SC | 548E | ANDERSON | SC |
| 2025-01-14 | 821-888-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | CLEMSON | SC |
| 2025-01-14 | 821-888-8XXX | 8000–8999 | Assigned | ONVOY, LLC - SC | 548E | CLEMSON | SC |
| 2025-01-14 | 821-999-0XXX | 0000–0999 | Assigned | ONVOY, LLC - SC | 548E | GAFFNEY | SC |
| 2025-01-14 | 821-999-9XXX | 9000–9999 | Assigned | ONVOY, LLC - SC | 548E | GAFFNEY | SC |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.