NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 308-889

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 308-889 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 308 blocks

Most active assignees, all time — NPA 308
QWEST CORPORATION 4
LEVEL 3 COMMUNICATIONS, LLC - NE 2
ONVOY, LLC - NE 1
NEW CINGULAR WIRELESS PCS, LLC - IL 1
N.E. COLORADO CELLULAR, 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
— 308-889-0XXX 0000–0999Reserved QWEST CORPORATION 9631 BIGSPRINGS NE
— 308-889-1XXX 1000–1999Reserved QWEST CORPORATION 9631 BIGSPRINGS NE
2021-02-23 308-889-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIGSPRINGS NE
— 308-889-3XXX 3000–3999Reserved QWEST CORPORATION 9631 BIGSPRINGS NE
2017-05-18 308-889-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BIGSPRINGS NE
2004-06-16 308-889-5XXX 5000–5999Assigned N.E. COLORADO CELLULAR, INC. 6874 BIGSPRINGS NE
2020-07-28 308-889-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BIGSPRINGS NE
2014-12-02 308-889-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BIGSPRINGS NE
2019-11-22 308-889-8XXX 8000–8999Assigned ONVOY, LLC - NE 549E BIGSPRINGS NE
— 308-889-9XXX 9000–9999Reserved QWEST CORPORATION 9631 BIGSPRINGS NE

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.