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 475
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 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 |
|---|---|---|---|---|---|---|---|
| 2026-06-12 | 475-392-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2026-06-12 | 475-392-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2026-05-27 | 475-389-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2026-05-27 | 475-392-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2026-05-27 | 475-392-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2026-02-20 | 475-394-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | ANSONIDRBY | CT |
| 2026-02-10 | 475-678-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2026-02-04 | 475-301-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2026-02-04 | 475-301-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2026-02-04 | 475-392-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-12-22 | 475-389-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2025-10-07 | 475-391-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2025-09-25 | 475-392-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-09-25 | 475-392-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-09-25 | 475-392-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-08-01 | 475-370-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2025-06-26 | 475-391-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2025-06-09 | 475-389-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2025-06-06 | 475-374-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | ANSONIDRBY | CT |
| 2025-04-01 | 475-387-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-01-30 | 475-370-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2025-01-13 | 475-349-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2025-01-13 | 475-384-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-01-13 | 475-384-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-01-13 | 475-384-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-01-13 | 475-384-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2025-01-13 | 475-384-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-12-12 | 475-455-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | ANSONIDRBY | CT |
| 2024-12-12 | 475-455-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | ANSONIDRBY | CT |
| 2024-11-14 | 475-372-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-11-14 | 475-372-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-11-14 | 475-372-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-09-13 | 475-341-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2024-09-13 | 475-341-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2024-09-13 | 475-373-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2024-09-13 | 475-373-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2024-08-27 | 475-372-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-08-27 | 475-372-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-08-27 | 475-372-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-08-27 | 475-372-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-08-27 | 475-372-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-08-15 | 475-370-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2024-08-15 | 475-370-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2024-08-06 | 475-366-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | ANSONIDRBY | CT |
| 2024-05-29 | 475-365-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-03-13 | 475-352-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2024-03-13 | 475-352-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2023-12-15 | 475-344-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2023-12-08 | 475-867-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2023-12-08 | 475-867-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
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.