NumberResearchThousands-blocks in 475-888
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 475-888 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 475 blocks
Most active assignees, all time — NPA 475
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-04-23 | 475-888-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | CT |
| 2019-04-05 | 475-888-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | CT |
| 2019-04-05 | 475-888-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CT | 639C | FAIRFIELD | CT |
| 2019-09-10 | 475-888-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | FAIRFIELD | CT |
| 2022-06-28 | 475-888-4XXX | 4000–4999 | Assigned | VONAGE AMERICA LLC | 197D | FAIRFIELD | CT |
| 2023-08-09 | 475-888-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | 539F | FAIRFIELD | CT |
| 2021-11-10 | 475-888-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FAIRFIELD | CT |
| 2021-11-10 | 475-888-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FAIRFIELD | CT |
| 2014-10-08 | 475-888-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | 539F | FAIRFIELD | CT |
| 2015-05-18 | 475-888-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | FAIRFIELD | CT |
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.