NumberResearchThousands-blocks in 906-372
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 906-372 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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-08-20 | 906-372-0XXX | 0000–0999 | Assigned | PENINSULA FIBER NETWORK, LLC - MI | 116F | GWINN | MI |
| — | 906-372-1XXX | 1000–1999 | Reserved | MICHIGAN BELL TEL CO | 9323 | GWINN | MI |
| — | 906-372-2XXX | 2000–2999 | Reserved | MICHIGAN BELL TEL CO | 9323 | GWINN | MI |
| 2010-07-12 | 906-372-3XXX | 3000–3999 | Assigned | BARAGA TELEPHONE COMPANY | 4253 | GWINN | MI |
| 2021-12-02 | 906-372-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | GWINN | MI |
| 2019-07-09 | 906-372-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | GWINN | MI |
| 2013-01-28 | 906-372-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GWINN | MI |
| 2018-02-05 | 906-372-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GWINN | MI |
| 2017-02-22 | 906-372-8XXX | 8000–8999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | GWINN | MI |
| — | 906-372-9XXX | 9000–9999 | Reserved | MICHIGAN BELL TEL CO | 9323 | GWINN | 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.