NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 541
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-10-23 | 541-717-7XXX | 7000–7999 | Assigned | INVOXIO INCORPORATED | 158H | BAKER | OR |
| 2018-10-23 | 541-800-5XXX | 5000–5999 | Assigned | INVOXIO INCORPORATED | 158H | STANFIELD | OR |
| 2018-10-23 | 541-970-2XXX | 2000–2999 | Assigned | INVOXIO INCORPORATED | 158H | PENDLETON | OR |
| 2018-08-24 | 541-907-9XXX | 9000–9999 | Assigned | INVOXIO INCORPORATED | 158H | LAPINE | OR |
| 2018-08-22 | 541-719-9XXX | 9000–9999 | Assigned | INVOXIO INCORPORATED | 158H | SISTERS | OR |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.