NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/27/2026
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 353
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-21 | 353-465-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-08-21 | 353-465-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-08-21 | 353-465-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-08-21 | 353-465-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-08-14 | 353-465-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WI | 007F | MADISON | WI |
| 2026-07-28 | 353-200-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WI | 225C | MADISON | WI |
| 2026-07-28 | 353-200-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WI | 225C | MADISON | WI |
| 2026-07-28 | 353-465-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WI | 225C | MADISON | WI |
| 2026-07-09 | 353-465-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WI | 007F | MADISON | WI |
| 2026-06-24 | 353-201-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - WI | 007F | MADISON | WI |
| 2026-06-04 | 353-465-8XXX | 8000–8999 | Assigned | AHOI LLC | 883K | MADISON | WI |
| 2026-05-29 | 353-201-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-05-29 | 353-201-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-05-29 | 353-201-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-05-29 | 353-201-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2026-05-29 | 353-201-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WI | 225C | MADISON | WI |
| 2026-05-08 | 353-202-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | HIGHLAND | WI |
| 2026-05-07 | 353-201-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WI | 007F | MADISON | WI |
| 2026-04-02 | 353-222-8XXX | 8000–8999 | Assigned | TECH COM, INC. - WI | 2556 | LONE ROCK | WI |
| 2026-03-10 | 353-200-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | MADISON | WI |
| 2026-03-10 | 353-201-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | MADISON | WI |
| 2026-03-10 | 353-201-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | MADISON | WI |
| 2025-12-26 | 353-353-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WI | 225C | BELLEVILLE | WI |
| 2025-12-26 | 353-353-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WI | 225C | BELLEVILLE | WI |
| 2025-12-26 | 353-353-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WI | 225C | BELLEVILLE | WI |
| 2025-12-26 | 353-353-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WI | 225C | BELLEVILLE | WI |
| 2025-12-26 | 353-353-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WI | 225C | BELLEVILLE | WI |
| 2025-12-26 | 353-353-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WI | 225C | BELLEVILLE | WI |
| 2025-12-26 | 353-529-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WI | 225C | DE FOREST | WI |
| 2025-12-26 | 353-529-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WI | 225C | DE FOREST | WI |
| 2025-12-26 | 353-529-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WI | 225C | DE FOREST | WI |
| 2025-12-22 | 353-201-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | MADISON | WI |
| 2025-11-17 | 353-333-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MONTELLO | WI |
| 2025-11-07 | 353-200-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2025-11-07 | 353-200-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2025-11-07 | 353-200-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2025-10-27 | 353-200-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | MADISON | WI |
| 2025-10-14 | 353-200-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WI | 225C | MADISON | WI |
| 2025-10-14 | 353-200-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WI | 225C | MADISON | WI |
| 2025-10-03 | 353-200-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WI | 225C | MADISON | WI |
| 2025-09-17 | 353-222-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LONE ROCK | WI |
| 2025-08-29 | 353-222-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WI | 225C | LONE ROCK | WI |
| 2025-08-29 | 353-222-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WI | 225C | LONE ROCK | WI |
| 2025-08-29 | 353-222-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WI | 225C | LONE ROCK | WI |
| 2025-08-29 | 353-333-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WI | 225C | MONTELLO | WI |
| 2025-08-29 | 353-333-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WI | 225C | MONTELLO | WI |
| 2025-08-29 | 353-333-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WI | 225C | MONTELLO | WI |
| 2025-08-29 | 353-444-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WI | 225C | BLOOM CITY | WI |
| 2025-08-29 | 353-444-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WI | 225C | BLOOM CITY | WI |
| 2025-08-29 | 353-444-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WI | 225C | BLOOM CITY | WI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.