NumberResearchThousands-blocks in 805-900
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 805-900 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 805 blocks
Most active assignees, all time — NPA 805
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-07-30 | 805-900-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CAYUCOS | CA |
| — | 805-900-1XXX | 1000–1999 | Reserved | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | CAYUCOS | CA |
| 2021-05-06 | 805-900-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CAYUCOS | CA |
| 2019-01-11 | 805-900-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CAYUCOS | CA |
| 2019-01-11 | 805-900-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CAYUCOS | CA |
| 2007-04-05 | 805-900-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CAYUCOS | CA |
| 2013-03-05 | 805-900-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | CAYUCOS | CA |
| 2013-12-09 | 805-900-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CAYUCOS | CA |
| 2017-03-14 | 805-900-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | CAYUCOS | CA |
| 2005-07-27 | 805-900-9XXX | 9000–9999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | CAYUCOS | 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.