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 |
|---|---|---|---|---|---|---|---|
| 2024-05-15 | 475-365-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2024-05-15 | 475-365-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2024-05-15 | 475-369-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | HUNTINGTON | CT |
| 2024-05-14 | 475-349-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2024-05-14 | 475-673-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | NORWALK | CT |
| 2024-05-08 | 475-346-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2024-05-08 | 475-346-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2024-05-08 | 475-346-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2024-05-07 | 475-365-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | NEW HAVEN | CT |
| 2024-05-01 | 475-368-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | DARIEN | CT |
| 2024-04-17 | 475-203-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2024-04-17 | 475-361-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CT | 639C | CHESHIRE | CT |
| 2024-04-09 | 475-366-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | ANSONIDRBY | CT |
| 2024-03-28 | 475-365-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | NEW HAVEN | CT |
| 2024-03-28 | 475-367-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | BYRAM | CT |
| 2024-03-27 | 475-203-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2024-03-27 | 475-291-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | NORWALK | CT |
| 2024-03-27 | 475-335-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2024-03-27 | 475-335-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2024-03-27 | 475-349-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | BRIDGEPORT | CT |
| 2024-03-25 | 475-463-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SEYMOUR | CT |
| 2024-03-19 | 475-353-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | CT |
| 2024-03-19 | 475-353-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | 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 |
| 2024-03-13 | 475-366-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2024-03-13 | 475-366-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2024-03-12 | 475-203-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2024-03-12 | 475-264-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CT | 639C | DARIEN | CT |
| 2024-03-11 | 475-352-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEW HAVEN | CT |
| 2024-03-11 | 475-352-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEW HAVEN | CT |
| 2024-03-11 | 475-352-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEW HAVEN | CT |
| 2024-03-11 | 475-352-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NEW HAVEN | CT |
| 2024-02-22 | 475-352-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2024-02-22 | 475-352-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2024-02-22 | 475-850-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | NORWALK | CT |
| 2024-02-21 | 475-362-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | SEYMOUR | CT |
| 2024-02-21 | 475-363-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | WESTPORT | CT |
| 2024-02-21 | 475-364-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | WOODBURY | CT |
| 2024-02-14 | 475-317-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2024-02-13 | 475-203-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2024-02-09 | 475-314-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | HUNTINGTON | CT |
| 2024-02-09 | 475-335-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CT | 639C | GREENWICH | CT |
| 2024-02-06 | 475-447-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | BYRAM | CT |
| 2024-02-06 | 475-622-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CT | 639C | WOLCOTT | CT |
| 2024-02-02 | 475-358-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | BRANFORD | CT |
| 2024-02-02 | 475-358-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | BRANFORD | CT |
| 2024-02-02 | 475-360-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | NEWTOWN | CT |
| 2024-02-02 | 475-360-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | NEWTOWN | CT |
| 2024-02-02 | 475-361-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | CHESHIRE | 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.