NumberResearchThousands-blocks in 206-801
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 206-801 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 206 blocks
Most active assignees, all time — NPA 206
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-01-14 | 206-801-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | RICHMNDBCH | WA |
| 2005-01-28 | 206-801-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | RICHMNDBCH | WA |
| 2003-03-26 | 206-801-2XXX | 2000–2999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7173 | RICHMNDBCH | WA |
| 2005-06-21 | 206-801-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RICHMNDBCH | WA |
| 2024-08-29 | 206-801-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RICHMNDBCH | WA |
| 2003-08-04 | 206-801-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | RICHMNDBCH | WA |
| 2006-09-21 | 206-801-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WA | 483E | RICHMNDBCH | WA |
| 2005-03-01 | 206-801-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | RICHMNDBCH | WA |
| 2022-03-31 | 206-801-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WA | 483E | RICHMNDBCH | WA |
| — | 206-801-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RICHMNDBCH | 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.