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 |
|---|---|---|---|---|---|---|---|
| 2026-09-17 | 475-368-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | DARIEN | CT |
| 2026-09-16 | 475-368-2XXX | 2000–2999 | Assigned | CSC WIRELESS, LLC | 425J | DARIEN | CT |
| 2026-09-16 | 475-368-3XXX | 3000–3999 | Assigned | CSC WIRELESS, LLC | 425J | DARIEN | CT |
| 2026-09-16 | 475-368-4XXX | 4000–4999 | Assigned | CSC WIRELESS, LLC | 425J | DARIEN | CT |
| 2026-09-15 | 475-360-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | NEWTOWN | CT |
| 2026-09-15 | 475-466-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CT | 639C | MADISON | CT |
| 2026-09-10 | 475-328-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | DARIEN | CT |
| 2026-09-10 | 475-383-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2026-09-10 | 475-383-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2026-09-09 | 475-404-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | ANSONIDRBY | CT |
| 2026-09-04 | 475-381-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2026-09-04 | 475-381-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2026-09-03 | 475-398-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | HUNTINGTON | CT |
| 2026-09-03 | 475-398-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | HUNTINGTON | CT |
| 2026-09-03 | 475-998-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | CT |
| 2026-09-02 | 475-381-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | WALLINGFD | CT |
| 2026-09-02 | 475-394-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | ANSONIDRBY | CT |
| 2026-09-02 | 475-403-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | WATERBURY | CT |
| 2026-09-02 | 475-747-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | NORWALK | CT |
| 2026-08-27 | 475-386-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | TRUMBULL | CT |
| 2026-08-27 | 475-386-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | TRUMBULL | CT |
| 2026-08-27 | 475-996-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | MILFORD | CT |
| 2026-08-21 | 475-397-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | NORWALK | CT |
| 2026-08-21 | 475-397-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | NORWALK | CT |
| 2026-08-21 | 475-678-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CT | 639C | DANBURY | CT |
| 2026-08-19 | 475-388-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | STAMFORD | CT |
| 2026-08-19 | 475-388-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | STAMFORD | CT |
| 2026-08-19 | 475-388-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | STAMFORD | CT |
| 2026-08-19 | 475-391-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2026-08-19 | 475-402-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-08-19 | 475-746-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CT | 639C | STAMFORD | CT |
| 2026-08-19 | 475-977-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | STAMFORD | CT |
| 2026-08-13 | 475-350-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | STAMFORD | CT |
| 2026-08-13 | 475-363-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | WESTPORT | CT |
| 2026-08-13 | 475-391-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | BRIDGEPORT | CT |
| 2026-08-11 | 475-367-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | BYRAM | CT |
| 2026-08-06 | 475-391-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2026-08-06 | 475-402-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-08-06 | 475-402-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2026-08-06 | 475-403-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | WATERBURY | CT |
| 2026-08-06 | 475-403-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | WATERBURY | CT |
| 2026-07-30 | 475-335-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2026-07-30 | 475-335-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2026-07-30 | 475-358-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | BRANFORD | CT |
| 2026-07-30 | 475-391-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2026-07-30 | 475-394-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CT | 639C | ANSONIDRBY | CT |
| 2026-07-30 | 475-401-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | GUILFORD | CT |
| 2026-07-28 | 475-389-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | WATERBURY | CT |
| 2026-07-28 | 475-389-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CT | 639C | WATERBURY | CT |
| 2026-07-28 | 475-389-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CT | 639C | WATERBURY | 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.