NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 217-851

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 217-851 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 217 blocks

Most active assignees, all time — NPA 217
NEW CINGULAR WIRELESS PCS, LLC - IL 7
TERRA NOVA TELECOM INC. 1
METROPCS, INC. 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 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
2003-08-01 217-851-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2003-08-01 217-851-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2003-08-01 217-851-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2004-03-16 217-851-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2004-03-16 217-851-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2004-03-16 217-851-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2014-08-20 217-851-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 LITCHFIELD IL
2012-02-24 217-851-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD IL
2026-06-11 217-851-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J LITCHFIELD IL
— 217-851-9XXX 9000–9999Reserved METROPCS, INC. 5562 LITCHFIELD IL

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.