NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 214-227

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026

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

The ten 1,000-number thousand-blocks inside prefix 214-227 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 214 blocks

Most active assignees, all time — NPA 214
LEVEL 3 COMMUNICATIONS, LLC - TX 5
SOUTHWESTERN BELL TELEPHONE COMPANY - TX 3
FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 2
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
— 214-227-0XXX 0000–0999Reserved FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 PLANO TX
— 214-227-1XXX 1000–1999Reserved FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 PLANO TX
2005-06-23 214-227-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2003-01-31 214-227-3XXX 3000–3999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 PLANO TX
2003-11-11 214-227-4XXX 4000–4999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 PLANO TX
2003-11-11 214-227-5XXX 5000–5999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 PLANO TX
2005-06-23 214-227-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2005-06-23 214-227-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2005-06-23 214-227-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2005-06-23 214-227-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX

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.