NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 734-256

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026

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

The ten 1,000-number thousand-blocks inside prefix 734-256 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 734 blocks

Most active assignees, all time — NPA 734
LEVEL 3 COMMUNICATIONS, LLC - MI 2
BANDWIDTH.COM CLEC, LLC - MI 2
TELEPORT COMMUNICATIONS AMERICA, LLC - MI 1
PAETEC ITEL, LLC 1
COMCAST IP PHONE, 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-08-25 734-256-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WILLIS MI
2015-01-15 734-256-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WILLIS MI
— 734-256-2XXX 2000–2999Available WILLIS MI
2005-04-07 734-256-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 WILLIS MI
2004-01-13 734-256-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 WILLIS MI
2005-12-06 734-256-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 WILLIS MI
2004-02-03 734-256-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WILLIS MI
2012-06-07 734-256-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WILLIS MI
2013-02-12 734-256-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
— 734-256-9XXX 9000–9999Reserved TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E WILLIS MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.