NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 248-256

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 248-256 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 248 blocks

Most active assignees, all time — NPA 248
TERRA NOVA TELECOM INC. 2
ONVOY, LLCV - MI 2
LEVEL 3 COMMUNICATIONS, LLC - MI 2
PAETEC ITEL, LLC 1
GRID 4 COMMUNICATIONS, INC. - MI 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
2024-09-16 248-256-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J OXFORD MI
— 248-256-1XXX 1000–1999Reserved LEVEL 3 COMMUNICATIONS, LLC - MI 6120 OXFORD MI
2021-02-03 248-256-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2021-02-03 248-256-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2025-08-04 248-256-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J OXFORD MI
2005-04-18 248-256-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 OXFORD MI
2003-01-24 248-256-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J OXFORD MI
2004-01-12 248-256-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J OXFORD MI
2006-08-04 248-256-8XXX 8000–8999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 OXFORD MI
— 248-256-9XXX 9000–9999Available OXFORD MI

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.