NumberResearchThousands-blocks in 320-305
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 320-305 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 320 blocks
Most active assignees, all time — NPA 320
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 320-305-0XXX | 0000–0999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | ORTONVILLE | MN |
| — | 320-305-1XXX | 1000–1999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | ORTONVILLE | MN |
| — | 320-305-2XXX | 2000–2999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | ORTONVILLE | MN |
| 2010-08-05 | 320-305-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | ORTONVILLE | MN |
| 2010-12-17 | 320-305-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | ORTONVILLE | MN |
| 2013-01-22 | 320-305-5XXX | 5000–5999 | Assigned | FARMERS MUTUAL TELEPHONE COMPANY - MN | 2836 | ORTONVILLE | MN |
| 2008-11-04 | 320-305-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MN | 980E | ORTONVILLE | MN |
| 2007-02-20 | 320-305-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MN | 184D | ORTONVILLE | MN |
| 2010-11-05 | 320-305-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MN | 184D | ORTONVILLE | MN |
| — | 320-305-9XXX | 9000–9999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | ORTONVILLE | MN |
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.