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 |
|---|---|---|---|---|---|---|---|
| 2023-06-08 | 857-737-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | WATERTOWN | MA |
| 2023-06-08 | 857-773-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | JAMAICA PL | MA |
| 2023-06-08 | 857-877-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2023-06-08 | 857-961-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2023-06-08 | 857-961-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2023-05-30 | 857-335-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-05-30 | 857-343-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-05-30 | 857-354-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-05-30 | 857-416-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-05-30 | 857-416-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2023-05-17 | 857-354-4XXX | 4000–4999 | Assigned | TC SYSTEMS, INC. | 7135 | BOSTON | MA |
| 2023-05-08 | 857-858-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | NEWTON | MA |
| 2023-05-08 | 857-858-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | NEWTON | MA |
| 2023-03-16 | 857-385-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DORCHESTER | MA |
| 2023-02-27 | 857-416-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA |
| 2023-01-23 | 857-231-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | NEWTON | MA |
| 2023-01-23 | 857-231-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | NEWTON | MA |
| 2023-01-23 | 857-231-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | NEWTON | MA |
| 2023-01-11 | 857-405-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2023-01-11 | 857-405-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2023-01-11 | 857-405-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2023-01-09 | 857-961-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2023-01-09 | 857-961-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2023-01-07 | 857-540-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2022-12-28 | 857-832-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2022-12-28 | 857-832-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2022-12-07 | 857-382-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | EASTBOSTON | MA |
| 2022-11-23 | 857-420-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2022-11-23 | 857-420-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2022-11-23 | 857-420-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2022-11-23 | 857-420-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2022-11-23 | 857-420-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2022-11-23 | 857-832-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2022-11-23 | 857-832-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2022-11-23 | 857-832-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | BRIGHTON | MA |
| 2022-11-21 | 857-688-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2022-11-21 | 857-688-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2022-11-21 | 857-688-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2022-11-21 | 857-688-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2022-11-17 | 857-392-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MA | 892D | JAMAICA PL | MA |
| 2022-11-17 | 857-392-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | JAMAICA PL | MA |
| 2022-11-17 | 857-416-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BOSTON | MA |
| 2022-11-17 | 857-416-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BOSTON | MA |
| 2022-11-17 | 857-416-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BOSTON | MA |
| 2022-11-17 | 857-418-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | DORCHESTER | MA |
| 2022-11-17 | 857-887-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | JAMAICA PL | MA |
| 2022-11-08 | 857-405-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2022-11-08 | 857-405-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2022-10-25 | 857-837-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | CHARLESTN | MA |
| 2022-10-24 | 857-466-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | HYDE PARK | 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.