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 714
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-10-12 | 714-289-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ORANGE | CA |
| 2013-10-29 | 714-236-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CYPRESS | CA |
| 2013-09-26 | 714-340-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | YORBALINDA | CA |
| 2011-06-16 | 714-363-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ORANGE | CA |
| 2010-03-15 | 714-602-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ORANGE | CA |
| 2010-02-26 | 714-760-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANTA ANA | CA |
| 2006-10-19 | 714-784-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BREA | CA |
| 2006-08-29 | 714-603-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ANAHEIM | CA |
| 2006-06-14 | 714-983-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PLACENTIA | CA |
| 2006-06-12 | 714-912-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ORANGE | CA |
| 2006-04-11 | 714-485-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | YORBALINDA | CA |
| 2006-04-11 | 714-649-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SILVERADO | CA |
| 2006-04-11 | 714-752-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BUENA PARK | CA |
| 2006-04-11 | 714-886-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CYPRESS | CA |
| 2006-03-09 | 714-519-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FULLERTON | CA |
| 2006-03-09 | 714-591-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GARDEN GRV | CA |
| 2005-05-26 | 714-852-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANTA ANA | 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.