NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 217-569

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 217-569 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
ONVOY, LLC 3
FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 2
TELNYX LLC 1
PEERLESS NETWORK OF ILLINOIS, LLC - IL 1
LEVEL 3 COMMUNICATIONS, LLC - 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
— 217-569-0XXX 0000–0999Available ARMSTRONG IL
2015-10-05 217-569-1XXX 1000–1999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E ARMSTRONG IL
— 217-569-2XXX 2000–2999Reserved FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 1000 ARMSTRONG IL
2018-08-01 217-569-3XXX 3000–3999Assigned ONVOY, LLC 224C ARMSTRONG IL
2012-09-04 217-569-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARMSTRONG IL
— 217-569-5XXX 5000–5999Reserved FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 1000 ARMSTRONG IL
2019-06-06 217-569-6XXX 6000–6999Assigned ONVOY, LLC 224C ARMSTRONG IL
2016-05-13 217-569-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ARMSTRONG IL
2019-06-06 217-569-8XXX 8000–8999Assigned ONVOY, LLC 224C ARMSTRONG IL
2020-05-11 217-569-9XXX 9000–9999Assigned TELNYX LLC 073H ARMSTRONG 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.