NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 531
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-04-06 | 531-204-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NORFOLK | NE |
| 2025-07-01 | 531-352-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OMAHA | NE |
| 2025-06-24 | 531-288-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MADISON | NE |
| 2025-06-24 | 531-390-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CREIGHTON | NE |
| 2025-06-20 | 531-337-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PLATTE CTR | NE |
| 2019-01-14 | 531-999-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OMAHA | NE |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.