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 |
|---|---|---|---|---|---|---|---|
| 2026-07-24 | 475-387-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-07-24 | 475-387-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-07-24 | 475-387-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-07-24 | 475-387-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-07-24 | 475-387-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-07-21 | 475-405-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CT | 639C | CHESHIRE | CT |
| 2026-07-21 | 475-678-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | DANBURY | CT |
| 2026-07-21 | 475-678-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | DANBURY | CT |
| 2026-07-21 | 475-997-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | CHESHIRE | CT |
| 2026-07-09 | 475-344-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | BRIDGEPORT | CT |
| 2026-07-09 | 475-389-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | WATERBURY | CT |
| 2026-07-09 | 475-394-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | ANSONIDRBY | CT |
| 2026-07-09 | 475-544-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | NORWALK | CT |
| 2026-07-09 | 475-998-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | FAIRFIELD | CT |
| 2026-07-08 | 475-357-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CT | 639C | MILFORD | CT |
| 2026-07-08 | 475-357-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CT | 639C | MILFORD | CT |
| 2026-07-08 | 475-998-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | CT |
| 2026-07-08 | 475-998-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | CT |
| 2026-06-30 | 475-358-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | BRANFORD | CT |
| 2026-06-30 | 475-358-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | BRANFORD | CT |
| 2026-06-30 | 475-367-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | BYRAM | CT |
| 2026-06-30 | 475-394-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | ANSONIDRBY | CT |
| 2026-06-30 | 475-394-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | ANSONIDRBY | CT |
| 2026-06-30 | 475-396-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2026-06-30 | 475-396-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2026-06-30 | 475-396-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2026-06-26 | 475-509-0XXX | 0000–0999 | Assigned | CABLEVISION LIGHTPATH, INC. - CT | 4950 | GREENWICH | CT |
| 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 |
| 2026-06-09 | 475-678-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | 7143 | DANBURY | CT |
| 2026-06-04 | 475-850-6XXX | 6000–6999 | Assigned | CSC WIRELESS, LLC | 425J | NORWALK | CT |
| 2026-06-04 | 475-850-9XXX | 9000–9999 | Assigned | CSC WIRELESS, LLC | 425J | NORWALK | CT |
| 2026-05-29 | 475-381-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2026-05-29 | 475-385-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | STAMFORD | CT |
| 2026-05-29 | 475-386-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | TRUMBULL | CT |
| 2026-05-29 | 475-397-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | NORWALK | 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 |
| 2026-05-20 | 475-678-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | DANBURY | CT |
| 2026-05-12 | 475-371-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | NEW CANAAN | CT |
| 2026-05-12 | 475-398-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HUNTINGTON | CT |
| 2026-05-12 | 475-398-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HUNTINGTON | CT |
| 2026-05-08 | 475-357-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | MILFORD | CT |
| 2026-05-08 | 475-358-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | BRANFORD | CT |
| 2026-05-08 | 475-383-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | GREENWICH | CT |
| 2026-05-08 | 475-397-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | NORWALK | CT |
| 2026-05-08 | 475-398-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | HUNTINGTON | CT |
| 2026-05-07 | 475-365-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-04-27 | 475-397-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | NORWALK | 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.