NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 608-683

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 608-683 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 608 blocks

Most active assignees, all time — NPA 608
NEW CINGULAR WIRELESS PCS, LLC - IL 4
TELEPORT COMMUNICATIONS AMERICA, LLC WI 1
T-MOBILE USA, INC. 1
MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 1
CHARTER IP ENABLED 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
2012-10-01 608-683-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 PORTAGE WI
2018-07-19 608-683-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTAGE WI
2017-09-11 608-683-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PORTAGE WI
2016-05-31 608-683-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 PORTAGE WI
2016-08-18 608-683-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTAGE WI
2019-07-24 608-683-5XXX 5000–5999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G PORTAGE WI
2019-12-23 608-683-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTAGE WI
2014-11-24 608-683-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORTAGE WI
2017-11-13 608-683-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTAGE WI
2019-12-23 608-683-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTAGE WI

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.