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 |
|---|---|---|---|---|---|---|---|
| 2024-10-07 | 475-376-4XXX | 4000–4999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-5XXX | 5000–5999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-6XXX | 6000–6999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-7XXX | 7000–7999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-8XXX | 8000–8999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-376-9XXX | 9000–9999 | Assigned | EON TELECOM, INC. | 839J | NEWTOWN | CT |
| 2024-10-07 | 475-378-0XXX | 0000–0999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-1XXX | 1000–1999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-2XXX | 2000–2999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-3XXX | 3000–3999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-4XXX | 4000–4999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-5XXX | 5000–5999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-6XXX | 6000–6999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-7XXX | 7000–7999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-8XXX | 8000–8999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-378-9XXX | 9000–9999 | Assigned | EON TELECOM, INC. | 839J | NEW CANAAN | CT |
| 2024-10-07 | 475-379-0XXX | 0000–0999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-1XXX | 1000–1999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-2XXX | 2000–2999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-3XXX | 3000–3999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-4XXX | 4000–4999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-5XXX | 5000–5999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-6XXX | 6000–6999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-7XXX | 7000–7999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-8XXX | 8000–8999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-07 | 475-379-9XXX | 9000–9999 | Assigned | EON TELECOM, INC. | 839J | NEW HAVEN | CT |
| 2024-10-03 | 475-354-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | WATERBURY | CT |
| 2024-10-02 | 475-363-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | WESTPORT | CT |
| 2024-09-26 | 475-270-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CT | 639C | WALLINGFD | CT |
| 2024-09-19 | 475-341-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | WATERBURY | CT |
| 2024-09-13 | 475-324-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | TRUMBULL | 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 | 475-353-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | FAIRFIELD | 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 |
| 2024-09-12 | 475-281-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2024-09-12 | 475-366-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2024-09-12 | 475-374-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2024-09-12 | 475-374-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2024-09-12 | 475-399-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2024-09-12 | 475-399-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2024-09-12 | 475-399-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2024-09-12 | 475-419-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2024-09-04 | 475-369-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HUNTINGTON | CT |
| 2024-09-04 | 475-369-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HUNTINGTON | CT |
| 2024-09-04 | 475-369-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HUNTINGTON | 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 |
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.