NumberResearchRecent thousands-block assignments
0 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, all time — NPA 951
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-07-31 | 951-777-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2018-07-12 | 951-373-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2016-12-19 | 951-783-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2016-06-29 | 951-421-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MORENO | CA |
| 2016-03-28 | 951-407-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CORONA | CA |
| 2016-03-18 | 951-406-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2016-03-11 | 951-405-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2015-04-07 | 951-462-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2015-02-13 | 951-324-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2013-05-02 | 951-376-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2011-03-23 | 951-299-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2011-03-15 | 951-332-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MIRA LOMA | CA |
| 2010-10-27 | 951-444-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CORONA | CA |
| 2009-04-24 | 951-530-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2009-03-06 | 951-729-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2008-04-28 | 951-224-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2008-03-27 | 951-332-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MIRA LOMA | CA |
| 2008-03-12 | 951-220-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CORONA | CA |
| 2008-03-12 | 951-588-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2007-06-12 | 951-213-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2007-03-06 | 951-977-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2007-02-08 | 951-215-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WOODCREST | CA |
| 2006-09-21 | 951-823-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2006-08-24 | 951-427-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CORONA | CA |
| 2006-08-14 | 951-790-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MIRA LOMA | CA |
| 2006-03-31 | 951-742-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
| 2006-03-31 | 951-977-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2005-12-21 | 951-902-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MORENO | CA |
| 2005-02-14 | 951-332-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MIRA LOMA | CA |
| 2005-02-01 | 951-479-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CORONA | CA |
| 2005-02-01 | 951-565-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WOODCREST | CA |
| 2005-02-01 | 951-588-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2005-01-25 | 951-534-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIVERSIDE | CA |
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.