NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 904
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-07-27 | 904-785-9XXX | 9000–9999 | Assigned | WINDSTREAM FLORIDA, INC. | 0336 | HASTINGS | FL |
| 2011-11-17 | 904-267-4XXX | 4000–4999 | Assigned | WINDSTREAM FLORIDA, INC. | 0336 | HILLIARD | FL |
| 2011-11-17 | 904-320-4XXX | 4000–4999 | Assigned | WINDSTREAM FLORIDA, INC. | 0336 | CALLAHAN | FL |
| 2010-10-22 | 904-341-0XXX | 0000–0999 | Assigned | WINDSTREAM FLORIDA, INC. | 0336 | CALLAHAN | FL |
| 2003-10-17 | 904-507-2XXX | 2000–2999 | Assigned | WINDSTREAM FLORIDA, INC. | 0336 | CALLAHAN | FL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.