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 949
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-10-12 | 949-566-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEWPORTBCH | CA |
| 2016-05-16 | 949-652-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SADLBK VLY | CA |
| 2014-09-04 | 949-558-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CAPITRNVLY | CA |
| 2014-08-14 | 949-635-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TRABUCO | CA |
| 2014-06-03 | 949-446-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SADLBK VLY | CA |
| 2014-05-06 | 949-873-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEWPORTBCH | CA |
| 2014-03-24 | 949-536-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | IRVINE | CA |
| 2011-06-21 | 949-441-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CAPITRNVLY | CA |
| 2011-06-01 | 949-328-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SADLBK VLY | CA |
| 2006-06-12 | 949-545-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CAPITRNVLY | CA |
| 2006-05-15 | 949-287-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEWPORTBCH | CA |
| 2006-02-06 | 949-264-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TRABUCO | CA |
| 2006-02-06 | 949-625-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RNCHOVIEJO | CA |
| 2005-03-25 | 949-273-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SADLBK VLY | 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.