NumberResearchThousands-blocks in 707-281
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 707-281 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 707 blocks
Most active assignees, all time — NPA 707
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-04-07 | 707-281-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | KELSEYVL | CA |
| 2020-12-09 | 707-281-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KELSEYVL | CA |
| 2021-10-11 | 707-281-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | KELSEYVL | CA |
| 2025-01-02 | 707-281-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KELSEYVL | CA |
| — | 707-281-4XXX | 4000–4999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | KELSEYVL | CA |
| 2018-08-24 | 707-281-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | KELSEYVL | CA |
| 2017-10-04 | 707-281-6XXX | 6000–6999 | Assigned | MCC TELEPHONY LLC | 593K | KELSEYVL | CA |
| — | 707-281-7XXX | 7000–7999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | KELSEYVL | CA |
| 2019-02-25 | 707-281-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | KELSEYVL | CA |
| — | 707-281-9XXX | 9000–9999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | KELSEYVL | CA |
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.