NumberResearchThousands-blocks in 626-604
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 626-604 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 626 blocks
Most active assignees, all time — NPA 626
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 626-604-0XXX | 0000–0999 | Reserved | ONVOY, LLC - CA | 649C | SIERRAMADR | CA |
| — | 626-604-1XXX | 1000–1999 | Reserved | BANDWIDTH.COM CLEC, LLC - CA | 981E | SIERRAMADR | CA |
| — | 626-604-2XXX | 2000–2999 | Reserved | ONVOY, LLC - CA | 649C | SIERRAMADR | CA |
| 2021-08-31 | 626-604-3XXX | 3000–3999 | Assigned | SKYE TELECOM LLC DBA SKYETEL | 622J | SIERRAMADR | CA |
| 2020-11-05 | 626-604-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SIERRAMADR | CA |
| 2020-11-05 | 626-604-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SIERRAMADR | CA |
| 2018-05-10 | 626-604-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SIERRAMADR | CA |
| — | 626-604-7XXX | 7000–7999 | Available | SIERRAMADR | CA | ||
| 2010-03-08 | 626-604-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SIERRAMADR | CA |
| 2013-10-17 | 626-604-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SIERRAMADR | 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.