NumberResearchThousands-blocks in 906-204
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 906-204 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-03-22 | 906-204-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ISHPEMING | MI |
| 2005-08-03 | 906-204-1XXX | 1000–1999 | Assigned | TELNET WORLDWIDE, INC. | 817J | ISHPEMING | MI |
| 2007-03-05 | 906-204-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ISHPEMING | MI |
| 2008-06-24 | 906-204-3XXX | 3000–3999 | Assigned | BARAGA TELEPHONE COMPANY | 4253 | ISHPEMING | MI |
| 2008-07-09 | 906-204-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ISHPEMING | MI |
| 2009-02-19 | 906-204-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ISHPEMING | MI |
| 2011-03-09 | 906-204-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ISHPEMING | MI |
| 2012-05-01 | 906-204-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ISHPEMING | MI |
| 2014-07-29 | 906-204-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ISHPEMING | MI |
| 2009-11-12 | 906-204-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ISHPEMING | 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.