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 818
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-12-10 | 818-805-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CANOGAPARK | CA |
| 2014-09-25 | 818-960-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NORTHRIDGE | CA |
| 2014-08-26 | 818-423-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NO HOLLYWD | CA |
| 2014-08-19 | 818-696-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GLENDALE | CA |
| 2013-10-17 | 818-852-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AGOURA | CA |
| 2013-08-30 | 818-616-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VAN NUYS | CA |
| 2013-08-26 | 818-853-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NO HOLLYWD | CA |
| 2013-08-05 | 818-697-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RESEDA | CA |
| 2011-07-26 | 818-465-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VAN NUYS | CA |
| 2011-06-13 | 818-280-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NORTHRIDGE | CA |
| 2010-12-28 | 818-561-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BRBN BRBN | CA |
| 2010-12-28 | 818-963-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CANOGAPARK | CA |
| 2010-12-22 | 818-945-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GLENDALE | CA |
| 2008-09-26 | 818-275-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LACRSCENTA | CA |
| 2008-09-26 | 818-532-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AGOURA | CA |
| 2008-09-26 | 818-578-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RESEDA | CA |
| 2008-09-09 | 818-495-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PSDN LACN | CA |
| 2008-09-09 | 818-504-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BRBN SNVY | CA |
| 2008-09-09 | 818-562-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BRBN BRBN | CA |
| 2008-09-03 | 818-477-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NORTHRIDGE | CA |
| 2008-08-07 | 818-290-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VAN NUYS | CA |
| 2008-08-07 | 818-824-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NO HOLLYWD | CA |
| 2008-08-05 | 818-396-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GLENDALE | CA |
| 2008-08-05 | 818-912-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CANOGAPARK | 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.