NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 870
TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 48
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
2024-03-25 870-969-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G ROE AR
2024-03-08 870-456-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G STUTTGART AR
2024-03-07 870-303-0XXX 0000–0999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HAZEN AR
2024-03-07 870-490-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MOUNT IDA AR
2024-03-07 870-552-8XXX 8000–8999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CARLISLE AR
2024-03-07 870-745-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G FORREST CY AR
2024-03-07 870-998-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G DEVALLSBLF AR
2024-03-05 870-889-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HUGHES AR
2024-03-04 870-472-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G NASHVILLE AR
2023-08-23 870-928-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CAVE CITY AR
2022-10-17 870-965-8XXX 8000–8999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CASH AR
2022-06-27 870-651-0XXX 0000–0999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G LAKE CITY AR
2022-04-20 870-521-8XXX 8000–8999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G NEWARK AR
2014-10-03 870-228-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HELENA AR
2014-08-20 870-206-8XXX 8000–8999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2014-03-28 870-569-9XXX 9000–9999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G BATESVILLE AR
2013-12-30 870-201-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G NEWPORT AR
2013-12-30 870-202-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G POCAHONTAS AR
2013-12-30 870-228-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HELENA AR
2013-12-30 870-228-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HELENA AR
2013-12-30 870-406-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G GURDON AR
2013-12-30 870-679-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G WALNUT RDG AR
2013-12-19 870-464-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G ARKADLPHIA AR
2013-12-19 870-569-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G BATESVILLE AR
2013-12-19 870-569-8XXX 8000–8999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G BATESVILLE AR
2013-11-19 870-808-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G TUCKERMAN AR
2013-11-19 870-808-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G TUCKERMAN AR
2013-11-14 870-701-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MT HOME AR
2013-11-14 870-701-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MT HOME AR
2013-11-14 870-701-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G MT HOME AR
2013-11-01 870-206-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2013-11-01 870-520-1XXX 1000–1999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2013-11-01 870-520-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2013-11-01 870-520-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2013-11-01 870-520-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2013-11-01 870-520-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2013-11-01 870-520-6XXX 6000–6999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2010-10-25 870-203-9XXX 9000–9999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2009-07-08 870-203-0XXX 0000–0999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2006-12-21 870-210-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G ARKADLPHIA AR
2006-12-21 870-228-6XXX 6000–6999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G HELENA AR
2006-12-21 870-353-0XXX 0000–0999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G GURDON AR
2006-12-21 870-495-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G NEWPORT AR
2006-12-07 870-569-4XXX 4000–4999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G BATESVILLE AR
2006-12-07 870-624-2XXX 2000–2999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G TUCKERMAN AR
2006-08-17 870-275-6XXX 6000–6999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2006-08-17 870-275-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JONESBORO AR
2006-08-17 870-637-5XXX 5000–5999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G WALNUT RDG AR

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.