NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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, all time — 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 |
|---|---|---|---|---|---|---|---|
| 2025-07-01 | 401-557-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | GREENWICH | RI |
| 2025-07-01 | 401-557-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | GREENWICH | RI |
| 2023-06-28 | 401-581-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2023-04-07 | 401-526-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2022-08-05 | 401-532-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2022-03-18 | 401-296-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | PROVIDENCE | RI |
| 2021-02-05 | 401-532-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2019-01-04 | 401-600-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | PROVIDENCE | RI |
| 2018-06-12 | 401-656-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WESTERLY | RI |
| 2018-06-12 | 401-656-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WESTERLY | RI |
| 2017-12-29 | 401-260-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2017-12-29 | 401-260-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2015-09-04 | 401-300-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2013-11-26 | 401-532-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2012-06-14 | 401-733-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2010-03-24 | 401-267-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | NO KINGSTN | RI |
| 2009-01-06 | 401-415-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | PROVIDENCE | RI |
| 2009-01-06 | 401-415-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | PROVIDENCE | RI |
| 2009-01-06 | 401-415-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | PROVIDENCE | RI |
| 2008-02-25 | 401-652-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WOONSOCKET | RI |
| 2006-07-28 | 401-281-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | LTLCOMPTON | RI |
| 2006-06-26 | 401-213-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CAROLINA | RI |
| 2006-06-26 | 401-227-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | SCITUATE | RI |
| 2006-06-26 | 401-371-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | PASCOAG | RI |
| 2006-06-26 | 401-466-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | BLOCK IS | RI |
| 2006-06-26 | 401-560-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | JAMESTOWN | RI |
| 2006-06-26 | 401-659-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CUMBLND HL | 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 |
| 2004-08-27 | 401-757-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2004-08-27 | 401-757-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
| 2003-12-02 | 401-410-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | BRISTOL | RI |
| 2003-11-04 | 401-315-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | WESTERLY | RI |
| 2002-08-07 | 401-757-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7351 | CENTREDALE | RI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.