NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 734-545

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 734-545 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 5
NEW CINGULAR WIRELESS PCS, LLC - IL 2
ONVOY, LLCV - MI 1
BANDWIDTH.COM CLEC, LLC - MI 1
123.NET, 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
— 734-545-0XXX 0000–0999Reserved NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANN ARBOR MI
2022-11-14 734-545-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C ANN ARBOR MI
2009-09-03 734-545-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2009-09-03 734-545-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2010-12-16 734-545-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-01-07 734-545-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-01-07 734-545-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2013-04-05 734-545-7XXX 7000–7999Assigned 123.NET, LLC 2550 ANN ARBOR MI
2012-03-08 734-545-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2014-05-15 734-545-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANN ARBOR 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.