NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 256-865

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 256-865 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 256 blocks

Most active assignees, all time — NPA 256
4
ONVOY, LLC - AL 2
ONVOY SPECTRUM, LLC 1
LEVEL 3 COMMUNICATIONS, LLC - AL 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 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
2023-05-24 256-865-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ASHLAND AL
2023-05-26 256-865-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H ASHLAND AL
— 256-865-2XXX 2000–2999Available ASHLAND AL
2023-10-23 256-865-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J ASHLAND AL
2021-05-24 256-865-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E ASHLAND AL
— 256-865-5XXX 5000–5999Available ASHLAND AL
2021-05-24 256-865-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E ASHLAND AL
2021-03-26 256-865-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ASHLAND AL
— 256-865-8XXX 8000–8999Available ASHLAND AL
— 256-865-9XXX 9000–9999Available ASHLAND AL

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.