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 |
|---|---|---|---|---|---|---|---|
| 2017-05-22 | 857-289-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-289-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-337-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BROOKLINE | MA |
| 2017-05-22 | 857-337-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BROOKLINE | MA |
| 2017-05-22 | 857-505-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-22 | 857-505-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-17 | 857-290-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | NEWTON | MA |
| 2017-05-10 | 857-773-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | JAMAICA PL | MA |
| 2017-05-02 | 857-289-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | BOSTON | MA |
| 2017-05-01 | 857-286-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-05-01 | 857-286-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-270-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | CAMBRIDGE | MA |
| 2017-04-28 | 857-283-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-283-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-28 | 857-663-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | DORCHESTER | MA |
| 2017-04-28 | 857-760-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MA | 892D | WATERTOWN | MA |
| 2017-04-28 | 857-773-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MA | 892D | JAMAICA PL | MA |
| 2017-04-27 | 857-216-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | NEWTON | MA |
| 2017-04-27 | 857-337-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | BROOKLINE | MA |
| 2017-04-18 | 857-201-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | WINTHROP | MA |
| 2017-04-18 | 857-386-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CHELSEA | MA |
| 2017-04-17 | 857-760-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | WATERTOWN | MA |
| 2017-04-17 | 857-895-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-17 | 857-895-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-17 | 857-895-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-14 | 857-419-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | MILTON | MA |
| 2017-04-14 | 857-520-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | HYDE PARK | 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.