NumberResearchThousands-blocks in 850-307
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 850-307 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 850 blocks
Most active assignees, all time — NPA 850
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-01-12 | 850-307-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - FL | 982E | DFUNIAKSPG | FL |
| — | 850-307-1XXX | 1000–1999 | Reserved | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | DFUNIAKSPG | FL |
| 2009-04-03 | 850-307-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | DFUNIAKSPG | FL |
| 2010-04-13 | 850-307-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | DFUNIAKSPG | FL |
| 2025-02-20 | 850-307-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DFUNIAKSPG | FL |
| 2004-08-17 | 850-307-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | DFUNIAKSPG | FL |
| 2026-08-20 | 850-307-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | DFUNIAKSPG | FL |
| 2009-11-20 | 850-307-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | DFUNIAKSPG | FL |
| 2009-11-20 | 850-307-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | DFUNIAKSPG | FL |
| — | 850-307-9XXX | 9000–9999 | Reserved | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | 0340 | DFUNIAKSPG | FL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.