NumberResearchRecent thousands-block assignments
2 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 857
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 |
|---|---|---|---|---|---|---|---|
| 2024-11-12 | 857-944-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BOSTON | MA |
| 2024-11-12 | 857-944-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BOSTON | MA |
| 2024-11-11 | 857-989-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWTON | MA |
| 2024-11-11 | 857-989-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWTON | MA |
| 2024-11-11 | 857-989-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWTON | MA |
| 2024-11-11 | 857-989-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWTON | MA |
| 2024-11-08 | 857-427-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOSTON | MA |
| 2024-11-08 | 857-428-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EVERETT | MA |
| 2024-11-08 | 857-428-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EVERETT | MA |
| 2024-11-08 | 857-428-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EVERETT | MA |
| 2024-11-08 | 857-429-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROXBURY | MA |
| 2024-11-08 | 857-429-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROXBURY | MA |
| 2024-11-08 | 857-429-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROXBURY | MA |
| 2024-11-08 | 857-466-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HYDE PARK | MA |
| 2024-11-08 | 857-466-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HYDE PARK | MA |
| 2024-11-08 | 857-475-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHELSEA | MA |
| 2024-11-08 | 857-475-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHELSEA | MA |
| 2024-11-08 | 857-475-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHELSEA | MA |
| 2024-11-08 | 857-497-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHARLESTN | MA |
| 2024-11-08 | 857-497-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHARLESTN | MA |
| 2024-11-08 | 857-497-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHARLESTN | MA |
| 2024-11-07 | 857-299-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BELMONT | MA |
| 2024-11-07 | 857-341-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BELMONT | MA |
| 2024-11-07 | 857-367-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WATERTOWN | MA |
| 2024-11-07 | 857-380-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EASTBOSTON | MA |
| 2024-11-07 | 857-605-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BRIGHTON | MA |
| 2024-11-07 | 857-605-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BRIGHTON | MA |
| 2024-11-07 | 857-737-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WATERTOWN | MA |
| 2024-11-07 | 857-822-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SOMERVILLE | MA |
| 2024-11-07 | 857-822-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SOMERVILLE | MA |
| 2024-11-07 | 857-822-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SOMERVILLE | MA |
| 2024-11-07 | 857-833-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WINTHROP | MA |
| 2024-11-07 | 857-833-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WINTHROP | MA |
| 2024-11-07 | 857-833-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WINTHROP | MA |
| 2024-11-07 | 857-857-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEWTON | MA |
| 2024-11-07 | 857-857-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEWTON | MA |
| 2024-11-07 | 857-857-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEWTON | MA |
| 2024-11-07 | 857-877-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BRIGHTON | MA |
| 2024-11-01 | 857-324-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2024-11-01 | 857-339-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2024-11-01 | 857-339-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2024-11-01 | 857-339-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2024-11-01 | 857-339-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2024-11-01 | 857-339-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2024-11-01 | 857-348-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2024-11-01 | 857-426-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | BROOKLINE | MA |
| 2024-11-01 | 857-426-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2024-11-01 | 857-427-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2024-11-01 | 857-427-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2024-11-01 | 857-427-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
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.