NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 475-444

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

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 475-444 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
PEERLESS NETWORK OF CONNECTICUT, LLC - CT 3
BANDWIDTH.COM CLEC, LLC - CT 2
ONVOY, LLC - CT 1
OMNIPOINT COMMUNICATIONS, INC. - CT 1
NEW CINGULAR WIRELESS PCS, LLC - DC 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2013-04-05 475-444-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEWTOWN CT
2013-04-05 475-444-1XXX 1000–1999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEWTOWN CT
2014-02-28 475-444-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWTOWN CT
2014-09-22 475-444-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEWTOWN CT
2013-02-11 475-444-4XXX 4000–4999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEWTOWN CT
2014-10-28 475-444-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NEWTOWN CT
2015-04-24 475-444-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEWTOWN CT
2014-06-12 475-444-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWTOWN CT
2015-04-24 475-444-8XXX 8000–8999Assigned ONVOY, LLC - CT 639C NEWTOWN CT
2014-05-21 475-444-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEWTOWN 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.