NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 740-304

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 740-304 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 740 blocks

Most active assignees, all time — NPA 740
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 4
METROPCS, INC. 2
AERIAL COMMUNICATIONS, INC. 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
LEVEL 3 COMMUNICATIONS, LLC - 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
2007-01-09 740-304-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LANCASTER OH
— 740-304-1XXX 1000–1999Reserved AERIAL COMMUNICATIONS, INC. 6701 LANCASTER OH
2006-07-26 740-304-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 LANCASTER OH
2007-11-08 740-304-3XXX 3000–3999Assigned METROPCS, INC. 5562 LANCASTER OH
2010-10-05 740-304-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
2011-01-06 740-304-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
2021-05-07 740-304-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
2011-07-27 740-304-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANCASTER OH
2021-12-30 740-304-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
— 740-304-9XXX 9000–9999Reserved METROPCS, INC. 5562 LANCASTER 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.