NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 931-259

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 931-259 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 931 blocks

Most active assignees, all time — NPA 931
NEW CINGULAR WIRELESS PCS, LLC - GA 7
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 2
LEVEL 3 COMMUNICATIONS, LLC - TN 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
— 931-259-0XXX 0000–0999Reserved NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN
2017-06-05 931-259-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN
2013-04-24 931-259-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MCMINNVL TN
2013-04-24 931-259-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MCMINNVL TN
2004-08-17 931-259-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MCMINNVL TN
— 931-259-5XXX 5000–5999Reserved NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN
— 931-259-6XXX 6000–6999Reserved NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN
2009-08-10 931-259-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN
2017-06-05 931-259-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN
— 931-259-9XXX 9000–9999Reserved NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCMINNVL TN

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.