NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 308-566

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 308-566 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
4
ONVOY, LLC - NE 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
LEVEL 3 COMMUNICATIONS, LLC - NE 1
CENTURYLINK COMMUNICATIONS, 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 308-566-0XXX 0000–0999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 CHAPPELL NE
2022-12-30 308-566-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CHAPPELL NE
2021-03-24 308-566-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E CHAPPELL NE
— 308-566-3XXX 3000–3999Available CHAPPELL NE
— 308-566-4XXX 4000–4999Available CHAPPELL NE
2021-01-04 308-566-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E CHAPPELL NE
— 308-566-6XXX 6000–6999Available CHAPPELL NE
2014-11-11 308-566-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHAPPELL NE
— 308-566-8XXX 8000–8999Available CHAPPELL NE
2021-02-23 308-566-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAPPELL 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.