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 323
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-02-22 | 323-373-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LSAN DA 11 | CA |
| 2022-02-22 | 323-767-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MONTEBELLO | CA |
| 2022-02-16 | 323-275-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LSAN DA 04 | CA |
| 2022-02-16 | 323-362-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LSAN DA 05 | CA |
| 2022-02-16 | 323-472-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LSAN DA 14 | 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.