NumberResearchThousands-blocks in 475-999
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 475-999 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 |
|---|---|---|---|---|---|---|---|
| 2013-09-24 | 475-999-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | 539F | FAIRFIELD | CT |
| 2013-10-11 | 475-999-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | FAIRFIELD | CT |
| 2014-03-20 | 475-999-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | FAIRFIELD | CT |
| 2013-11-15 | 475-999-3XXX | 3000–3999 | Assigned | CABLEVISION LIGHTPATH, INC. - CT | 4950 | FAIRFIELD | CT |
| 2014-05-27 | 475-999-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | FAIRFIELD | CT |
| 2014-05-27 | 475-999-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | FAIRFIELD | CT |
| 2013-03-07 | 475-999-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | FAIRFIELD | CT |
| 2014-06-12 | 475-999-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FAIRFIELD | CT |
| 2013-06-06 | 475-999-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | FAIRFIELD | CT |
| 2013-02-11 | 475-999-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | 539F | 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.