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 564
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-02-07 | 564-246-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | PT ROBERTS | WA |
| 2023-04-14 | 564-237-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | VANCOUVER | WA |
| 2022-01-25 | 564-219-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | VANCOUVER | WA |
| 2021-12-30 | 564-217-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | LONGVIEW | WA |
| 2021-09-15 | 564-214-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | YACOLT | WA |
| 2020-05-14 | 564-888-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | VANCOUVER | WA |
| 2019-03-20 | 564-999-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | OLYMPIA | WA |
| 2019-02-28 | 564-888-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | VANCOUVER | WA |
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.