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
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-10-24 | 857-466-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | HYDE PARK | MA |
| 2022-10-24 | 857-995-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SOMERVILLE | MA |
| 2022-10-19 | 857-209-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | CAMBRIDGE | MA |
| 2022-10-19 | 857-357-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | CAMBRIDGE | MA |
| 2022-10-19 | 857-998-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | CAMBRIDGE | MA |
| 2022-10-18 | 857-387-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | QUINCY | MA |
| 2022-10-18 | 857-387-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | QUINCY | MA |
| 2022-10-18 | 857-387-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | QUINCY | MA |
| 2022-10-04 | 857-758-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2022-10-04 | 857-758-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2022-10-04 | 857-767-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2022-10-04 | 857-767-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2022-10-04 | 857-767-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2022-10-04 | 857-767-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2022-09-27 | 857-639-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | CAMBRIDGE | MA |
| 2022-09-27 | 857-639-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | CAMBRIDGE | MA |
| 2022-09-27 | 857-799-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | CAMBRIDGE | MA |
| 2022-09-21 | 857-230-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2022-09-21 | 857-365-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2022-09-21 | 857-396-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2022-09-21 | 857-396-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2022-09-21 | 857-397-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2022-09-21 | 857-397-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2022-09-21 | 857-398-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2022-09-21 | 857-398-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2022-09-21 | 857-398-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | MA |
| 2022-09-21 | 857-425-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2022-09-21 | 857-465-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2022-09-21 | 857-465-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2022-09-21 | 857-465-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2022-09-21 | 857-468-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CHARLESTN | MA |
| 2022-09-21 | 857-832-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2022-09-21 | 857-832-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2022-09-02 | 857-355-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | EVERETT | MA |
| 2022-09-02 | 857-355-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | EVERETT | MA |
| 2022-09-02 | 857-382-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | EASTBOSTON | MA |
| 2022-09-02 | 857-382-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | EASTBOSTON | MA |
| 2022-09-02 | 857-422-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | SO BOSTON | MA |
| 2022-09-02 | 857-422-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | SO BOSTON | MA |
| 2022-09-02 | 857-491-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2022-09-02 | 857-746-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2022-09-02 | 857-746-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2022-08-18 | 857-397-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | ROXBURY | MA |
| 2022-08-18 | 857-397-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | ROXBURY | MA |
| 2022-08-18 | 857-407-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROXBURY | MA |
| 2022-08-03 | 857-396-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | BROOKLINE | MA |
| 2022-08-03 | 857-396-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | BROOKLINE | MA |
| 2022-08-03 | 857-396-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | BROOKLINE | MA |
| 2022-07-28 | 857-376-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2022-07-28 | 857-379-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ROXBURY | 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.