NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 724-220

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 724-220 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 724 blocks

Most active assignees, all time — NPA 724
CORE COMMUNICATIONS, INC. - PA 4
BANDWIDTH.COM CLEC, LLC - PA 2
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1
IP HORIZON LLC 1
CENTURYLINK COMMUNICATIONS, 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2018-05-23 724-220-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCOTTDALE PA
2004-04-05 724-220-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCOTTDALE PA
2004-07-13 724-220-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCOTTDALE PA
2018-05-23 724-220-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCOTTDALE PA
2013-10-28 724-220-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F SCOTTDALE PA
2007-05-02 724-220-5XXX 5000–5999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C SCOTTDALE PA
2014-08-27 724-220-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F SCOTTDALE PA
2015-05-19 724-220-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCOTTDALE PA
2017-12-12 724-220-8XXX 8000–8999Assigned IP HORIZON LLC 515J SCOTTDALE PA
2018-05-23 724-220-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCOTTDALE PA

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.