NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 618-857

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 618-857 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 618 blocks

Most active assignees, all time — NPA 618
PEERLESS NETWORK OF ILLINOIS, LLC - IL 2
CHARTER IP ENABLED SERVICES, LLC 2
TELEPORT COMMUNICATIONS AMERICA, LLC - IL 1
PAETEC ITEL, LLC 1
METROPCS, 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
2014-07-01 618-857-0XXX 0000–0999Assigned METROPCS, INC. 5562 E ST LOUIS IL
2012-12-14 618-857-1XXX 1000–1999Assigned MCC NETWORK SERVICES, LLC 075A E ST LOUIS IL
2006-08-29 618-857-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K E ST LOUIS IL
2013-04-04 618-857-3XXX 3000–3999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E E ST LOUIS IL
2013-05-06 618-857-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K E ST LOUIS IL
2010-09-15 618-857-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J E ST LOUIS IL
2007-12-07 618-857-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 E ST LOUIS IL
2009-02-16 618-857-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 E ST LOUIS IL
2006-10-06 618-857-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C E ST LOUIS IL
2013-04-04 618-857-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E E ST LOUIS IL

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.