NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 248-264

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 248-264 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
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 4
ONVOY SPECTRUM, LLC 1
GRID 4 COMMUNICATIONS, INC. - MI 1
COMCAST IP PHONE, LLC 1
BANDWIDTH.COM CLEC, 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 248-264-0XXX 0000–0999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 SOUTH LYON MI
2024-05-28 248-264-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SOUTH LYON MI
2003-02-12 248-264-2XXX 2000–2999Assigned 123.NET, LLC 2550 SOUTH LYON MI
2010-08-12 248-264-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SOUTH LYON MI
— 248-264-4XXX 4000–4999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 SOUTH LYON MI
— 248-264-5XXX 5000–5999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 SOUTH LYON MI
2003-02-21 248-264-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SOUTH LYON MI
2005-01-20 248-264-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 SOUTH LYON MI
2005-06-16 248-264-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 SOUTH LYON MI
2006-08-04 248-264-9XXX 9000–9999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 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.