NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 301-978

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 301-978 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 301 blocks

Most active assignees, all time — NPA 301
VERIZON MARYLAND, INC. 5
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 2
PAETEC ITEL, LLC 1
CORE COMMUNICATIONS, INC.- MD 1
COMCAST IP PHONE, 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
2004-02-26 301-978-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC.- MD 2593 WSNGTNZN10 MD
2007-05-08 301-978-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
— 301-978-2XXX 2000–2999Reserved VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2013-01-14 301-978-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J WSNGTNZN10 MD
— 301-978-4XXX 4000–4999Reserved VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
— 301-978-5XXX 5000–5999Reserved VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2007-09-13 301-978-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2014-08-22 301-978-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN10 MD
— 301-978-8XXX 8000–8999Reserved VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
— 301-978-9XXX 9000–9999Reserved VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD

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.