NumberResearchThousands-blocks in 509-672
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 509-672 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 509 blocks
Most active assignees, all time — NPA 509
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-02-02 | 509-672-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WA | 483E | RIMROCK | WA |
| 2025-06-25 | 509-672-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | RIMROCK | WA |
| — | 509-672-2XXX | 2000–2999 | Reserved | CENTURYTEL OF COWICHE, INC. DBA CENTURYLINK | 2410 | RIMROCK | WA |
| 2021-06-01 | 509-672-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WA | 483E | RIMROCK | WA |
| 2022-03-24 | 509-672-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WA | 483E | RIMROCK | WA |
| 2014-12-22 | 509-672-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | RIMROCK | WA |
| 2011-07-15 | 509-672-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WA | 483E | RIMROCK | WA |
| 2008-08-08 | 509-672-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WA | 483E | RIMROCK | WA |
| — | 509-672-8XXX | 8000–8999 | Available | RIMROCK | WA | ||
| — | 509-672-9XXX | 9000–9999 | Available | RIMROCK | 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.