NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 414-209

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 414-209 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 414 blocks

Most active assignees, all time — NPA 414
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 3
BANDWIDTH.COM CLEC, LLC - WI 2
ONVOY, LLC - WI 1
LEVEL 3 COMMUNICATIONS, LLC - WI 1
CENTURYLINK COMMUNICATIONS, LLC 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
— 414-209-0XXX 0000–0999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILWAUKZN3 WI
— 414-209-1XXX 1000–1999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILWAUKZN3 WI
2012-07-31 414-209-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN3 WI
2016-02-18 414-209-3XXX 3000–3999Assigned ONVOY, LLC - WI 225C MILWAUKZN3 WI
2014-11-19 414-209-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2014-11-19 414-209-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2014-11-03 414-209-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILWAUKZN3 WI
2008-05-05 414-209-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN3 WI
2015-02-03 414-209-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MILWAUKZN3 WI
— 414-209-9XXX 9000–9999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILWAUKZN3 WI

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.