Thousands-blocks in 734-345

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 734-345 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

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 5

ONVOY, LLCV - MI 2

COMCAST IP PHONE, LLC 2

ACD TELECOM, INC. - MI 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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
—	734-345-0XXX	0000–0999	Reserved	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	BELLEVILLE	MI
2012-11-29	734-345-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	BELLEVILLE	MI
2005-06-20	734-345-2XXX	2000–2999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	BELLEVILLE	MI
2005-06-20	734-345-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	BELLEVILLE	MI
—	734-345-4XXX	4000–4999	Reserved	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	BELLEVILLE	MI
—	734-345-5XXX	5000–5999	Reserved	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	BELLEVILLE	MI
2013-01-03	734-345-6XXX	6000–6999	Assigned	ONVOY, LLCV - MI	543C	BELLEVILLE	MI
2005-11-09	734-345-7XXX	7000–7999	Assigned	ACD TELECOM, INC. - MI	3535	BELLEVILLE	MI
2022-09-28	734-345-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	BELLEVILLE	MI
2013-09-10	734-345-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	BELLEVILLE	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.