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 857
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-02-08 | 857-416-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2024-02-08 | 857-416-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2024-02-08 | 857-466-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | HYDE PARK | MA |
| 2024-02-08 | 857-565-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2024-02-07 | 857-550-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | BELMONT | MA |
| 2024-02-07 | 857-737-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | WATERTOWN | MA |
| 2024-02-06 | 857-257-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | SO BOSTON | MA |
| 2024-02-06 | 857-422-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | SO BOSTON | MA |
| 2024-02-06 | 857-475-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | CHELSEA | MA |
| 2024-02-06 | 857-475-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | CHELSEA | MA |
| 2024-02-06 | 857-497-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | CHARLESTN | MA |
| 2024-01-31 | 857-428-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | EVERETT | MA |
| 2024-01-31 | 857-428-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | EVERETT | MA |
| 2024-01-30 | 857-605-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2024-01-29 | 857-374-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | QUINCY | MA |
| 2024-01-29 | 857-374-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | QUINCY | MA |
| 2024-01-29 | 857-387-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | QUINCY | MA |
| 2024-01-29 | 857-387-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | QUINCY | MA |
| 2024-01-29 | 857-467-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | SOMERVILLE | MA |
| 2024-01-29 | 857-467-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | SOMERVILLE | MA |
| 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 |
| 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 |
| 2023-09-06 | 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 |
| 2023-08-08 | 857-895-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-07-19 | 857-388-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | SOMERVILLE | MA |
| 2023-07-19 | 857-405-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2023-07-19 | 857-405-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2023-07-19 | 857-405-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2023-07-19 | 857-410-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | CHARLESTN | MA |
| 2023-07-19 | 857-419-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | MILTON | MA |
| 2023-07-19 | 857-466-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | HYDE PARK | MA |
| 2023-07-19 | 857-466-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | HYDE PARK | MA |
| 2023-07-19 | 857-639-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2023-07-19 | 857-639-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2023-07-19 | 857-639-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2023-07-19 | 857-737-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | WATERTOWN | MA |
| 2023-07-19 | 857-737-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | WATERTOWN | MA |
| 2023-07-19 | 857-961-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2023-07-19 | 857-961-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | 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.