NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 501-226

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 501-226 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 501 blocks

Most active assignees, all time — NPA 501
NEW CINGULAR WIRELESS PCS, LLC - IL 3
TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 2
BANDWIDTH.COM CLEC, LLC - AR 2
ONVOY, LLC - AR 1
LEVEL 3 COMMUNICATIONS, LLC - AR 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
2014-08-20 501-226-0XXX 0000–0999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JESSIEVL AR
2017-02-28 501-226-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F JESSIEVL AR
2021-03-19 501-226-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F JESSIEVL AR
2011-03-30 501-226-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C JESSIEVL AR
2004-04-07 501-226-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 JESSIEVL AR
2006-12-21 501-226-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JESSIEVL AR
2015-05-28 501-226-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F JESSIEVL AR
2014-10-01 501-226-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JESSIEVL AR
2014-10-01 501-226-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JESSIEVL AR
2007-10-12 501-226-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JESSIEVL AR

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.