NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026
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 920
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-09-25 | 920-754-2XXX | 2000–2999 | Assigned | FRONTIER NORTH INC. - WI | 0886 | REEDSVILLE | WI |
| 2009-05-27 | 920-654-8XXX | 8000–8999 | Assigned | FRONTIER NORTH INC. - WI | 0886 | MISHICOT | WI |
| 2006-11-21 | 920-449-7XXX | 7000–7999 | Assigned | FRONTIER NORTH INC. - WI | 0886 | PLYMOUTH | WI |
| 2006-02-27 | 920-533-1XXX | 1000–1999 | Assigned | FRONTIER NORTH INC. - WI | 0886 | CAMPBELSPT | WI |
| 2003-09-19 | 920-753-7XXX | 7000–7999 | Assigned | FRONTIER NORTH INC. - WI | 0886 | MT CALVARY | WI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.