NumberResearchThousands-blocks in 626-531
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 626-531 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-06-19 | 626-531-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MONROVIA | CA |
| 2014-06-19 | 626-531-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MONROVIA | CA |
| 2013-04-11 | 626-531-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MONROVIA | CA |
| 2006-07-03 | 626-531-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | MONROVIA | CA |
| 2014-10-03 | 626-531-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MONROVIA | CA |
| 2014-10-03 | 626-531-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MONROVIA | CA |
| 2005-07-27 | 626-531-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MONROVIA | CA |
| 2012-03-26 | 626-531-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MONROVIA | CA |
| 2021-06-23 | 626-531-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MONROVIA | CA |
| 2023-06-23 | 626-531-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | MONROVIA | 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.