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 310
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-05-12 | 310-698-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | REDONDO | CA |
| 2024-03-25 | 310-818-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CMTN GRDN | CA |
| 2024-01-03 | 310-593-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SNMN SNMN | CA |
| 2022-09-06 | 310-862-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SNMN MRVS | CA |
| 2022-08-04 | 310-602-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LOMITA | CA |
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.