NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 281-750

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 281-750 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 281 blocks

Most active assignees, all time — NPA 281
NEW CINGULAR WIRELESS PCS, LLC - IL 5
GRANDE COMMUNICATIONS NETWORKS, INC. - TX 3
ONVOY, LLC - TX 1
ETS TELEPHONE COMPANY, INC. 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
— 281-750-0XXX 0000–0999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 RICHMNRNBG TX
2003-11-14 281-750-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICHMNRNBG TX
2003-11-14 281-750-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICHMNRNBG TX
— 281-750-3XXX 3000–3999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 RICHMNRNBG TX
2006-05-24 281-750-4XXX 4000–4999Assigned ETS TELEPHONE COMPANY, INC. 2091 RICHMNRNBG TX
2007-09-12 281-750-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICHMNRNBG TX
2003-11-14 281-750-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICHMNRNBG TX
— 281-750-7XXX 7000–7999Reserved GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 RICHMNRNBG TX
2003-12-10 281-750-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C RICHMNRNBG TX
2008-01-18 281-750-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICHMNRNBG TX

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.