NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 972-325

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 972-325 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 972 blocks

Most active assignees, all time — NPA 972
LEVEL 3 COMMUNICATIONS, LLC - TX 5
ONVOY, LLC - TX 2
BANDWIDTH.COM CLEC, LLC - TX 2
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 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
2008-01-31 972-325-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2005-09-23 972-325-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2007-09-24 972-325-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2007-06-21 972-325-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SEAGOVILLE TX
2006-02-23 972-325-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2008-01-31 972-325-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2010-01-27 972-325-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SEAGOVILLE TX
2010-05-28 972-325-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C SEAGOVILLE TX
2010-07-16 972-325-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SEAGOVILLE TX
2021-09-15 972-325-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C SEAGOVILLE TX

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.