NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 618-699

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 618-699 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
NEW CINGULAR WIRELESS PCS, LLC - IL 5
TELEPORT COMMUNICATIONS AMERICA, LLC - IL 1
T-MOBILE USA, INC. 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 1
MCC NETWORK SERVICES, LLC 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
2021-02-12 618-699-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VANDALIA IL
2009-08-13 618-699-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA IL
2016-05-20 618-699-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA IL
2019-01-22 618-699-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 VANDALIA IL
2004-06-21 618-699-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 VANDALIA IL
2020-05-26 618-699-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA IL
2018-07-24 618-699-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 VANDALIA IL
2021-02-01 618-699-7XXX 7000–7999Assigned MCC NETWORK SERVICES, LLC 075A VANDALIA IL
2018-03-08 618-699-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA IL
2013-04-11 618-699-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA 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.