NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 443-295

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 443-295 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 443 blocks

Most active assignees, all time — NPA 443
LEVEL 3 COMMUNICATIONS, LLC - MD 3
COMCAST IP PHONE, LLC 2
TELEPORT COMMUNICATIONS AMERICA, LLC - MD 1
PAETEC ITEL, LLC 1
CORE COMMUNICATIONS, INC.- MD 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
2004-03-04 443-295-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC.- MD 2593 PRINCEFRCK MD
2004-01-15 443-295-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J PRINCEFRCK MD
2006-07-05 443-295-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MD 7325 PRINCEFRCK MD
2008-11-12 443-295-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F PRINCEFRCK MD
— 443-295-4XXX 4000–4999Reserved LEVEL 3 COMMUNICATIONS, LLC - MD 6119 PRINCEFRCK MD
2012-06-27 443-295-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 PRINCEFRCK MD
2005-02-23 443-295-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 PRINCEFRCK MD
2005-02-11 443-295-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PRINCEFRCK MD
2016-05-13 443-295-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PRINCEFRCK MD
2008-02-01 443-295-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 PRINCEFRCK 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.