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 |
|---|---|---|---|---|---|---|---|
| 2015-10-19 | 475-292-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-19 | 475-292-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-19 | 475-292-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-19 | 475-292-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-19 | 475-395-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-10-19 | 475-395-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-10-19 | 475-559-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2015-10-16 | 475-439-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ANSONIDRBY | CT |
| 2015-10-16 | 475-439-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ANSONIDRBY | CT |
| 2015-10-14 | 475-218-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | DANBURY | CT |
| 2015-10-08 | 475-292-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | STAMFORD | CT |
| 2015-10-01 | 475-239-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | TRUMBULL | CT |
| 2015-10-01 | 475-399-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-01 | 475-399-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-01 | 475-419-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-01 | 475-419-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-10-01 | 475-434-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2015-10-01 | 475-434-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2015-10-01 | 475-441-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2015-10-01 | 475-441-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2015-10-01 | 475-689-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WATERBURY | CT |
| 2015-09-28 | 475-559-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2015-09-21 | 475-206-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DANBURY | CT |
| 2015-09-18 | 475-206-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DANBURY | CT |
| 2015-09-18 | 475-212-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | 539F | NAUGATUCK | CT |
| 2015-09-18 | 475-266-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NORWALK | CT |
| 2015-09-18 | 475-343-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MERIDEN | CT |
| 2015-09-17 | 475-395-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-09-17 | 475-395-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-09-17 | 475-399-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-09-17 | 475-399-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-09-17 | 475-399-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-09-17 | 475-399-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-09-17 | 475-414-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2015-09-11 | 475-266-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-09-11 | 475-266-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-09-11 | 475-266-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-09-11 | 475-439-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | ANSONIDRBY | CT |
| 2015-09-11 | 475-559-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2015-09-11 | 475-559-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2015-09-10 | 475-313-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | WATERBURY | CT |
| 2015-09-08 | 475-559-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2015-09-04 | 475-220-0XXX | 0000–0999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | NEW HAVEN | CT |
| 2015-09-04 | 475-220-1XXX | 1000–1999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | NEW HAVEN | CT |
| 2015-09-04 | 475-220-2XXX | 2000–2999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | NEW HAVEN | CT |
| 2015-09-04 | 475-220-3XXX | 3000–3999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | NEW HAVEN | CT |
| 2015-09-04 | 475-220-4XXX | 4000–4999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | NEW HAVEN | CT |
| 2015-09-04 | 475-220-5XXX | 5000–5999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | NEW HAVEN | CT |
| 2015-09-04 | 475-220-6XXX | 6000–6999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | NEW HAVEN | CT |
| 2015-09-04 | 475-220-7XXX | 7000–7999 | Assigned | PAETEC COMMUNICATIONS, LLC - CT | 3083 | 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.