NumberResearchRecent thousands-block assignments
2 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, 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 |
|---|---|---|---|---|---|---|---|
| 2024-01-29 | 857-565-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2024-01-26 | 857-491-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2024-01-23 | 857-418-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2024-01-23 | 857-418-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2024-01-23 | 857-418-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2024-01-23 | 857-418-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2024-01-23 | 857-418-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2024-01-23 | 857-420-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2024-01-09 | 857-217-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DORCHESTER | MA |
| 2024-01-08 | 857-756-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CAMBRIDGE | MA |
| 2023-12-08 | 857-387-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | QUINCY | MA |
| 2023-11-24 | 857-467-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SOMERVILLE | MA |
| 2023-11-09 | 857-565-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-11-09 | 857-565-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-11-09 | 857-867-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-11-09 | 857-867-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-10-11 | 857-605-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2023-10-06 | 857-506-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-10-06 | 857-506-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-09-26 | 857-550-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | BELMONT | MA |
| 2023-09-26 | 857-550-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BELMONT | MA |
| 2023-09-26 | 857-550-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | BELMONT | MA |
| 2023-09-26 | 857-550-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | BELMONT | MA |
| 2023-09-26 | 857-550-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | BELMONT | MA |
| 2023-09-25 | 857-398-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | ROXBURY | MA |
| 2023-09-25 | 857-407-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | ROXBURY | MA |
| 2023-09-25 | 857-597-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | WINTHROP | MA |
| 2023-09-12 | 857-755-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | QUINCY | MA |
| 2023-09-06 | 857-557-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-09-06 | 857-758-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-09-06 | 857-788-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-09-01 | 857-961-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2023-08-23 | 857-396-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-08-23 | 857-396-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-08-23 | 857-423-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-08-23 | 857-746-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-08-23 | 857-746-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2023-08-17 | 857-497-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CHARLESTN | MA |
| 2023-08-16 | 857-397-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-08-16 | 857-397-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2023-08-16 | 857-468-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CHARLESTN | MA |
| 2023-08-16 | 857-468-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CHARLESTN | MA |
| 2023-08-16 | 857-468-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CHARLESTN | MA |
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.