NumberResearchRecent thousands-block assignments
25 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 475
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 |
|---|---|---|---|---|---|---|---|
| 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 |
| 2025-01-08 | 475-341-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WATERBURY | CT |
| 2025-01-08 | 475-341-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WATERBURY | CT |
| 2025-01-08 | 475-354-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WATERBURY | CT |
| 2025-01-08 | 475-367-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | BYRAM | CT |
| 2025-01-08 | 475-369-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | HUNTINGTON | CT |
| 2025-01-08 | 475-385-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | STAMFORD | CT |
| 2025-01-08 | 475-385-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | STAMFORD | CT |
| 2025-01-07 | 475-384-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | NEW HAVEN | CT |
| 2024-12-26 | 475-357-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | MILFORD | CT |
| 2024-12-16 | 475-324-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CT | 639C | TRUMBULL | CT |
| 2024-12-16 | 475-474-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | TRUMBULL | CT |
| 2024-12-12 | 475-454-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | DANBURY | 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 |
| 2024-12-06 | 475-350-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | STAMFORD | CT |
| 2024-12-03 | 475-314-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HUNTINGTON | CT |
| 2024-11-26 | 475-383-8XXX | 8000–8999 | Assigned | NUSO, LLC | 732J | GREENWICH | CT |
| 2024-11-26 | 475-383-9XXX | 9000–9999 | Assigned | NUSO, LLC | 732J | GREENWICH | CT |
| 2024-11-22 | 475-344-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BRIDGEPORT | CT |
| 2024-11-22 | 475-370-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | DANBURY | CT |
| 2024-11-21 | 475-381-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2024-11-21 | 475-383-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2024-11-21 | 475-384-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2024-11-21 | 475-850-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | NORWALK | 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 |
| 2024-10-23 | 475-350-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | STAMFORD | CT |
| 2024-10-22 | 475-361-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHESHIRE | CT |
| 2024-10-22 | 475-361-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHESHIRE | CT |
| 2024-10-21 | 475-362-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | 539F | SEYMOUR | CT |
| 2024-10-15 | 475-381-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2024-10-14 | 475-360-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CT | 639C | NEWTOWN | CT |
| 2024-10-11 | 475-369-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | HUNTINGTON | CT |
| 2024-10-09 | 475-380-0XXX | 0000–0999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-1XXX | 1000–1999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-2XXX | 2000–2999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-3XXX | 3000–3999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-4XXX | 4000–4999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-5XXX | 5000–5999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-6XXX | 6000–6999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-7XXX | 7000–7999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-8XXX | 8000–8999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-09 | 475-380-9XXX | 9000–9999 | Assigned | EON TELECOM, INC. | 839J | DANBURY | CT |
| 2024-10-07 | 475-376-0XXX | 0000–0999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-1XXX | 1000–1999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-2XXX | 2000–2999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-3XXX | 3000–3999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | 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.