NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 330-359

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 330-359 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
FRONTIER NORTH, INC. - OH 5
SUPER-NET, INC. - OH 2
TELEPORT COMMUNICATIONS AMERICA, LLC - OH 1
PEERLESS NETWORK OF OHIO, LLC - OH 1
CENTURYLINK COMMUNICATIONS, LLC 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
— 330-359-0XXX 0000–0999Reserved FRONTIER NORTH, INC. - OH 0615 WILMOT OH
2013-11-27 330-359-1XXX 1000–1999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F WILMOT OH
— 330-359-2XXX 2000–2999Reserved FRONTIER NORTH, INC. - OH 0615 WILMOT OH
2014-08-21 330-359-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILMOT OH
2010-12-28 330-359-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 WILMOT OH
— 330-359-5XXX 5000–5999Reserved FRONTIER NORTH, INC. - OH 0615 WILMOT OH
— 330-359-6XXX 6000–6999Reserved FRONTIER NORTH, INC. - OH 0615 WILMOT OH
— 330-359-7XXX 7000–7999Reserved FRONTIER NORTH, INC. - OH 0615 WILMOT OH
2005-04-11 330-359-8XXX 8000–8999Assigned SUPER-NET, INC. - OH 155F WILMOT OH
2011-07-12 330-359-9XXX 9000–9999Assigned SUPER-NET, INC. - OH 155F WILMOT 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.