NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 507-323

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 507-323 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 507 blocks

Most active assignees, all time — NPA 507
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 4
BANDWIDTH.COM CLEC, LLC - MN 4
TELEPORT COMMUNICATIONS AMERICA, LLC - MN 1
CHARTER IP ENABLED SERVICES, 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
— 507-323-0XXX 0000–0999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 FARIBAULT MN
2020-11-05 507-323-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MN 980E FARIBAULT MN
2010-11-04 507-323-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MN 980E FARIBAULT MN
2012-03-02 507-323-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MN 980E FARIBAULT MN
— 507-323-4XXX 4000–4999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 FARIBAULT MN
— 507-323-5XXX 5000–5999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 FARIBAULT MN
2015-05-18 507-323-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MN 8405 FARIBAULT MN
— 507-323-7XXX 7000–7999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 FARIBAULT MN
2012-05-01 507-323-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FARIBAULT MN
2012-05-14 507-323-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MN 980E FARIBAULT MN

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.