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 206
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-11-12 | 206-603-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - WA | 937F | VASHON | WA |
| 2018-03-19 | 206-401-6XXX | 6000–6999 | Assigned | ASTOUND BROADBAND, LLC - WA | 937F | RICHMNDBCH | WA |
| 2017-04-26 | 206-929-7XXX | 7000–7999 | Assigned | ASTOUND BROADBAND, LLC - WA | 937F | DES MOINES | WA |
| 2016-04-21 | 206-485-7XXX | 7000–7999 | Assigned | ASTOUND BROADBAND, LLC - WA | 937F | SEATTLE | WA |
| 2013-06-06 | 206-602-6XXX | 6000–6999 | Assigned | ASTOUND BROADBAND, LLC - WA | 937F | SEATTLE | WA |
| 2011-11-23 | 206-538-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - WA | 937F | SEATTLE | 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.