NumberResearchRecent thousands-block assignments
25 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, last 30 days — NPA 820
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2019-01-25 | 820-444-4XXX | 4000–4999 | Assigned | FRACTEL, LLC | 965H | NEWBURYPRK | CA |
| 2019-01-25 | 820-444-5XXX | 5000–5999 | Assigned | FRACTEL, LLC | 965H | NEWBURYPRK | CA |
| 2019-01-24 | 820-666-6XXX | 6000–6999 | Assigned | FRACTEL, LLC | 965H | SNLUSOBSPO | CA |
| 2019-01-23 | 820-222-2XXX | 2000–2999 | Assigned | FRACTEL, LLC | 965H | CAMARILLO | CA |
| 2019-01-23 | 820-222-7XXX | 7000–7999 | Assigned | FRACTEL, LLC | 965H | CAMARILLO | CA |
| 2019-01-23 | 820-333-3XXX | 3000–3999 | Assigned | FRACTEL, LLC | 965H | THOUSAOAKS | CA |
| 2019-01-22 | 820-777-7XXX | 7000–7999 | Assigned | FRACTEL, LLC | 965H | SANTAPAULA | CA |
| 2019-01-22 | 820-999-9XXX | 9000–9999 | Assigned | FRACTEL, LLC | 965H | OXNARD | CA |
| 2019-01-15 | 820-300-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | GUADALUPE | CA |
| 2019-01-15 | 820-300-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | GUADALUPE | CA |
| 2019-01-15 | 820-400-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | PARKFIELD | CA |
| 2019-01-15 | 820-400-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | PARKFIELD | CA |
| 2018-12-24 | 820-888-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SIMIVALLEY | CA |
| 2018-06-26 | 820-200-0XXX | 0000–0999 | Assigned | ADVANCED TELECOM SOLUTIONS, LLC | 181J | THOUSAOAKS | CA |
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.