Thousands-blocks in 248-278

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 248-278 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

ONVOY, LLCV - MI 4

METROPCS, INC. 2

WOW! INTERNET, CABLE AND PHONE 1

TELEPORT COMMUNICATIONS AMERICA, LLC - MI 1

PEERLESS NETWORK OF MICHIGAN, LLC - 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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2013-12-10	248-278-0XXX	0000–0999	Assigned	PEERLESS NETWORK OF MICHIGAN, LLC - MI	933G	SOUTH LYON	MI
2012-03-20	248-278-1XXX	1000–1999	Assigned	ONVOY, LLCV - MI	543C	SOUTH LYON	MI
2011-05-13	248-278-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	SOUTH LYON	MI
2011-05-13	248-278-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	SOUTH LYON	MI
2012-12-11	248-278-4XXX	4000–4999	Assigned	ONVOY, LLCV - MI	543C	SOUTH LYON	MI
2012-08-24	248-278-5XXX	5000–5999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	SOUTH LYON	MI
2012-05-02	248-278-6XXX	6000–6999	Assigned	WOW! INTERNET, CABLE AND PHONE	961J	SOUTH LYON	MI
2013-07-19	248-278-7XXX	7000–7999	Assigned	ONVOY, LLCV - MI	543C	SOUTH LYON	MI
2013-01-03	248-278-8XXX	8000–8999	Assigned	ONVOY, LLCV - MI	543C	SOUTH LYON	MI
2014-03-04	248-278-9XXX	9000–9999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	SOUTH LYON	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.