NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 843-542

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 843-542 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 843 blocks

Most active assignees, all time — NPA 843
FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 5
METROPCS, INC. 3
COMMIO, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 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
2021-09-29 843-542-0XXX 0000–0999Assigned COMMIO, LLC 939H WALTERBORO SC
— 843-542-1XXX 1000–1999Reserved FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 WALTERBORO SC
— 843-542-2XXX 2000–2999Reserved FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 WALTERBORO SC
2004-11-16 843-542-3XXX 3000–3999Assigned METROPCS, INC. 5562 WALTERBORO SC
2006-01-04 843-542-4XXX 4000–4999Assigned METROPCS, INC. 5562 WALTERBORO SC
2010-06-08 843-542-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 WALTERBORO SC
2004-12-09 843-542-6XXX 6000–6999Assigned METROPCS, INC. 5562 WALTERBORO SC
— 843-542-7XXX 7000–7999Reserved FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 WALTERBORO SC
— 843-542-8XXX 8000–8999Reserved FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 WALTERBORO SC
— 843-542-9XXX 9000–9999Reserved FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 WALTERBORO SC

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.