NumberResearchThousands-blocks in 850-880
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 850-880 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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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-01-17 | 850-880-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM, INC. - FL | 382G | FREEPORT | FL |
| 2018-07-30 | 850-880-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FREEPORT | FL |
| 2017-09-14 | 850-880-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | FREEPORT | FL |
| 2018-07-13 | 850-880-3XXX | 3000–3999 | Assigned | ONVOY, LLC - FL | 937C | FREEPORT | FL |
| 2018-07-13 | 850-880-4XXX | 4000–4999 | Assigned | ONVOY, LLC - FL | 937C | FREEPORT | FL |
| 2017-06-01 | 850-880-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | FREEPORT | FL |
| — | 850-880-6XXX | 6000–6999 | Reserved | COMCAST IP PHONE, LLC | 318J | FREEPORT | FL |
| 2014-06-26 | 850-880-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FREEPORT | FL |
| 2018-05-04 | 850-880-8XXX | 8000–8999 | Assigned | ONVOY, LLC - FL | 937C | FREEPORT | FL |
| 2022-09-27 | 850-880-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FREEPORT | FL |
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.