NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 443-767

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 443-767 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
PAETEC ITEL, LLC 4
ONVOY, LLC - MD 3
CORE COMMUNICATIONS, INC.- MD 2
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
— 443-767-0XXX 0000–0999Reserved PAETEC ITEL, LLC 829J WORTHINGTN MD
2020-05-12 443-767-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D WORTHINGTN MD
2004-03-04 443-767-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC.- MD 2593 WORTHINGTN MD
2020-05-12 443-767-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WORTHINGTN MD
2012-09-13 443-767-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WORTHINGTN MD
— 443-767-5XXX 5000–5999Available WORTHINGTN MD
2019-03-15 443-767-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC.- MD 2593 WORTHINGTN MD
2008-08-21 443-767-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WORTHINGTN MD
— 443-767-8XXX 8000–8999Reserved PAETEC ITEL, LLC 829J WORTHINGTN MD
— 443-767-9XXX 9000–9999Reserved PAETEC ITEL, LLC 829J WORTHINGTN MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.