NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 330-476

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 330-476 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 330 blocks

Most active assignees, all time — NPA 330
PEERLESS NETWORK OF OHIO, LLC - OH 2
LEVEL 3 COMMUNICATIONS, LLC - OH 2
TWC IP ENABLED SERVICES, LLC 1
TELEPORT COMMUNICATIONS AMERICA, LLC - OH 1
SUPER-NET, INC. - OH 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-05-02 330-476-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARROLLTON OH
2026-05-22 330-476-1XXX 1000–1999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CARROLLTON OH
2004-10-20 330-476-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CARROLLTON OH
2013-07-12 330-476-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CARROLLTON OH
2013-08-13 330-476-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CARROLLTON OH
2006-09-11 330-476-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CARROLLTON OH
2007-03-15 330-476-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K CARROLLTON OH
2013-10-29 330-476-7XXX 7000–7999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CARROLLTON OH
2021-11-24 330-476-8XXX 8000–8999Assigned SUPER-NET, INC. - OH 155F CARROLLTON OH
2008-12-04 330-476-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CARROLLTON OH

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.