NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, all time — NPA 906
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-02-22 | 906-372-8XXX | 8000–8999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | GWINN | MI |
| 2016-12-28 | 906-275-6XXX | 6000–6999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | HOUGHTON | MI |
| 2016-12-28 | 906-379-6XXX | 6000–6999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | SALTSTMARI | MI |
| 2016-12-28 | 906-702-6XXX | 6000–6999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | ISHPEMING | MI |
| 2015-09-30 | 906-286-8XXX | 8000–8999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | MANISTIQUE | MI |
| 2015-09-30 | 906-448-1XXX | 1000–1999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | IRON MT | MI |
| 2015-09-30 | 906-825-9XXX | 9000–9999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | GLADSTONE | MI |
| 2015-09-30 | 906-914-2XXX | 2000–2999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | MENOMINEE | MI |
| 2015-09-10 | 906-264-6XXX | 6000–6999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | MARQUETTE | MI |
| 2012-03-20 | 906-212-5XXX | 5000–5999 | Assigned | UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | ESCANABA | 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.