NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 256-247

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 256-247 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
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 5
NEW CINGULAR WIRELESS PCS, LLC - GA 2
TERRA NOVA TELECOM INC. 1
PAETEC ITEL, LLC 1
ONVOY SPECTRUM, 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
— 256-247-0XXX 0000–0999Reserved BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ROGERSVL AL
— 256-247-1XXX 1000–1999Reserved BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ROGERSVL AL
2008-08-29 256-247-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
— 256-247-3XXX 3000–3999Reserved BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ROGERSVL AL
2014-10-02 256-247-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ROGERSVL AL
— 256-247-5XXX 5000–5999Reserved BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ROGERSVL AL
2021-09-29 256-247-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ROGERSVL AL
— 256-247-7XXX 7000–7999Reserved BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ROGERSVL AL
2008-08-29 256-247-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
2020-10-20 256-247-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J ROGERSVL 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.