NumberResearchThousands-blocks in 906-379
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/21/2026
The ten 1,000-number thousand-blocks inside prefix 906-379 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 906 blocks
Most active assignees, all time — NPA 906
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 906-379-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | SALTSTMARI | MI |
| 2004-09-30 | 906-379-1XXX | 1000–1999 | Assigned | 123.NET, LLC | 2550 | SALTSTMARI | MI |
| 2017-10-03 | 906-379-2XXX | 2000–2999 | Assigned | ONVOY, LLCV - MI | 543C | SALTSTMARI | MI |
| 2017-10-03 | 906-379-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | SALTSTMARI | MI |
| 2005-02-18 | 906-379-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | SALTSTMARI | MI |
| 2017-10-03 | 906-379-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | SALTSTMARI | MI |
| 2016-12-28 | 906-379-6XXX | 6000–6999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | SALTSTMARI | MI |
| 2014-10-06 | 906-379-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SALTSTMARI | MI |
| 2014-10-06 | 906-379-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SALTSTMARI | MI |
| — | 906-379-9XXX | 9000–9999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | SALTSTMARI | MI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.