NumberResearchRecent thousands-block assignments
0 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, all time — NPA 351
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-12-07 | 351-266-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | PRINCETON | MA |
| 2022-12-07 | 351-529-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | MERRIMAC | MA |
| 2022-11-18 | 351-221-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | LOWELL | MA |
| 2022-11-18 | 351-221-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | LOWELL | MA |
| 2022-11-07 | 351-667-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ACTON | MA |
| 2022-11-07 | 351-667-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ACTON | MA |
| 2022-11-07 | 351-667-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ACTON | MA |
| 2022-10-13 | 351-230-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | LEOMINSTER | MA |
| 2022-10-10 | 351-230-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | LEOMINSTER | MA |
| 2022-10-10 | 351-277-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | LAWRENCE | MA |
| 2022-09-26 | 351-226-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WESTFORD | MA |
| 2022-09-22 | 351-213-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | TEMPLETON | MA |
| 2022-08-30 | 351-216-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | HAMILTON | MA |
| 2022-08-26 | 351-208-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | LOWELL | MA |
| 2022-08-26 | 351-221-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | LOWELL | MA |
| 2022-08-26 | 351-230-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | LEOMINSTER | MA |
| 2022-08-26 | 351-230-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | LEOMINSTER | MA |
| 2022-08-24 | 351-353-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | HAVERHILL | MA |
| 2022-08-17 | 351-213-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | TEMPLETON | MA |
| 2022-06-17 | 351-426-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | DANVERS | MA |
| 2022-06-03 | 351-228-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | ANDOVER | MA |
| 2022-05-20 | 351-220-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | ACTON | MA |
| 2022-05-19 | 351-358-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | PEPPERELL | MA |
| 2022-05-16 | 351-444-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | IPSWICH | MA |
| 2022-04-08 | 351-213-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | TEMPLETON | MA |
| 2022-04-08 | 351-345-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | HUDSON | MA |
| 2022-03-18 | 351-229-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | AMESBURY | MA |
| 2022-03-18 | 351-231-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | GLOUCESTER | MA |
| 2022-03-10 | 351-220-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | ACTON | MA |
| 2022-03-09 | 351-333-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HARVARD | MA |
| 2022-03-02 | 351-226-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WESTFORD | MA |
| 2022-02-24 | 351-220-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ACTON | MA |
| 2022-02-24 | 351-220-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ACTON | MA |
| 2022-02-24 | 351-220-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ACTON | MA |
| 2022-02-22 | 351-588-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HAVERHILL | MA |
| 2022-02-22 | 351-588-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HAVERHILL | MA |
| 2022-02-17 | 351-588-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HAVERHILL | MA |
| 2022-02-16 | 351-229-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | AMESBURY | MA |
| 2022-02-16 | 351-233-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ASHBURNHAM | MA |
| 2022-02-16 | 351-266-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PRINCETON | MA |
| 2022-02-16 | 351-350-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | IPSWICH | MA |
| 2022-02-16 | 351-350-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | IPSWICH | MA |
| 2022-02-16 | 351-426-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | DANVERS | MA |
| 2022-02-16 | 351-837-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | ASHBY | MA |
| 2022-02-15 | 351-227-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BOLTON | MA |
| 2022-02-11 | 351-230-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | LEOMINSTER | MA |
| 2022-02-11 | 351-746-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WINCHENDON | MA |
| 2022-01-28 | 351-213-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | TEMPLETON | MA |
| 2022-01-28 | 351-354-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LUNENBURG | MA |
| 2022-01-28 | 351-837-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | ASHBY | 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.