NumberResearchRecent thousands-block assignments
11 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 401
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 |
|---|---|---|---|---|---|---|---|
| 2005-04-13 | 401-575-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2005-04-13 | 401-642-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PAWTUCKET | RI |
| 2005-04-01 | 401-404-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | CENTREDALE | RI |
| 2005-04-01 | 401-404-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | CENTREDALE | RI |
| 2005-03-15 | 401-868-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-03-09 | 401-369-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PROVIDENCE | RI |
| 2005-03-07 | 401-780-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-03-07 | 401-780-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-03-07 | 401-865-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-02-18 | 401-237-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | WARREN | RI |
| 2005-02-18 | 401-237-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | WARREN | RI |
| 2005-02-18 | 401-354-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | PROVIDENCE | RI |
| 2005-02-18 | 401-369-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | PROVIDENCE | RI |
| 2005-02-18 | 401-369-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | PROVIDENCE | RI |
| 2005-02-18 | 401-396-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | BRISTOL | RI |
| 2005-02-18 | 401-429-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | PROVIDENCE | RI |
| 2005-02-18 | 401-699-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-02-16 | 401-404-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | CENTREDALE | RI |
| 2005-02-14 | 401-491-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | HOPEVALLEY | RI |
| 2005-02-07 | 401-477-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2005-02-04 | 401-615-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | W WARWICK | RI |
| 2005-02-03 | 401-234-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | GREENWICH | RI |
| 2005-02-03 | 401-262-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | W WARWICK | RI |
| 2005-02-03 | 401-371-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | PASCOAG | RI |
| 2005-02-03 | 401-622-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | WESTERLY | RI |
| 2005-02-03 | 401-685-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | TIVERTON | RI |
| 2005-02-01 | 401-437-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | PROVIDENCE | RI |
| 2005-01-31 | 401-234-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | GREENWICH | RI |
| 2005-01-25 | 401-354-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PROVIDENCE | RI |
| 2005-01-17 | 401-262-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | W WARWICK | RI |
| 2005-01-17 | 401-312-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | PAWTUCKET | RI |
| 2005-01-13 | 401-222-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2005-01-13 | 401-477-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2005-01-13 | 401-633-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2005-01-13 | 401-633-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2005-01-13 | 401-633-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2005-01-13 | 401-868-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-01-13 | 401-868-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-01-13 | 401-868-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2005-01-10 | 401-229-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | WOONSOCKET | RI |
| 2005-01-10 | 401-352-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | WARWICK | RI |
| 2005-01-07 | 401-216-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2005-01-07 | 401-216-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2005-01-06 | 401-312-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | PAWTUCKET | RI |
| 2004-12-29 | 401-566-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - RI | 4016 | JAMESTOWN | RI |
| 2004-12-14 | 401-710-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PASCOAG | RI |
| 2004-12-13 | 401-230-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2004-12-13 | 401-243-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
| 2004-12-13 | 401-365-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | PAWTUCKET | RI |
| 2004-12-13 | 401-632-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | 6389 | PROVIDENCE | RI |
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.