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 |
|---|---|---|---|---|---|---|---|
| 2016-01-07 | 475-279-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | DANBURY | CT |
| 2016-01-07 | 475-330-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | FAIRFIELD | CT |
| 2016-01-07 | 475-414-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | NEW HAVEN | CT |
| 2016-01-07 | 475-414-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | NEW HAVEN | CT |
| 2016-01-07 | 475-439-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ANSONIDRBY | CT |
| 2016-01-07 | 475-439-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ANSONIDRBY | CT |
| 2016-01-07 | 475-731-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2016-01-07 | 475-731-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2016-01-07 | 475-731-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2016-01-07 | 475-988-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | BRIDGEPORT | CT |
| 2016-01-07 | 475-988-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BRIDGEPORT | CT |
| 2016-01-06 | 475-225-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | BRIDGEPORT | CT |
| 2016-01-05 | 475-283-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2016-01-05 | 475-283-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2016-01-05 | 475-283-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2016-01-05 | 475-283-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-12-30 | 475-226-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-12-30 | 475-350-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-12-30 | 475-350-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-12-30 | 475-350-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-12-30 | 475-350-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-12-30 | 475-414-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2015-12-30 | 475-489-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-12-30 | 475-489-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-12-30 | 475-489-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-30 | 475-226-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-30 | 475-226-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-30 | 475-226-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-30 | 475-226-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-30 | 475-226-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-30 | 475-226-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-23 | 475-292-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | 7143 | STAMFORD | CT |
| 2015-11-17 | 475-224-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2015-11-17 | 475-224-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2015-11-17 | 475-279-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2015-11-17 | 475-489-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-17 | 475-489-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-17 | 475-489-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-17 | 475-489-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-16 | 475-350-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-16 | 475-350-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | STAMFORD | CT |
| 2015-11-11 | 475-395-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-11 | 475-395-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-11 | 475-395-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-11 | 475-395-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2015-11-10 | 475-559-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | WATERBURY | CT |
| 2015-10-30 | 475-292-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | 539F | STAMFORD | CT |
| 2015-10-27 | 475-329-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | DANBURY | CT |
| 2015-10-19 | 475-218-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | DANBURY | CT |
| 2015-10-19 | 475-225-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | 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.