NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 501
TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 24
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
2024-03-04 501-496-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G REDFIELD AR
2022-11-15 501-600-8XXX 8000–8999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G PLEASANTPL AR
2021-02-24 501-426-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CONWAY AR
2021-02-24 501-426-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CONWAY AR
2018-08-02 501-808-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G VILONIA AR
2014-08-20 501-226-0XXX 0000–0999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JESSIEVL AR
2013-12-30 501-204-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JESSIEVL AR
2013-12-30 501-204-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JESSIEVL AR
2013-12-30 501-229-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MALVERN AR
2013-12-30 501-237-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G LONOKE AR
2013-12-30 501-241-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JACKSONVL AR
2013-12-30 501-270-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HEBER SPG AR
2013-12-30 501-270-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HEBER SPG AR
2013-12-30 501-286-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CABOT AR
2013-12-30 501-286-6XXX 6000–6999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CABOT AR
2013-12-30 501-289-6XXX 6000–6999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MORRILTON AR
2011-08-23 501-422-0XXX 0000–0999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CABOT AR
2010-09-29 501-266-6XXX 6000–6999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G LONOKE AR
2009-09-11 501-286-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CABOT AR
2009-09-11 501-533-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JACKSONVL AR
2006-12-21 501-226-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JESSIEVL AR
2006-12-21 501-229-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MALVERN AR
2006-12-21 501-365-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HEBER SPG AR
2006-08-17 501-215-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MORRILTON 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.