NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 337-413

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 337-413 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 337 blocks

Most active assignees, all time — NPA 337
4
TERRA NOVA TELECOM INC. 2
TELEPORT COMMUNICATIONS AMERICA LA - LLC 1
PAETEC ITEL, LLC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 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
— 337-413-0XXX 0000–0999Available FRANKLIN LA
2022-08-04 337-413-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J FRANKLIN LA
— 337-413-2XXX 2000–2999Available FRANKLIN LA
2010-01-14 337-413-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 FRANKLIN LA
2013-09-09 337-413-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J FRANKLIN LA
2016-04-25 337-413-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C FRANKLIN LA
— 337-413-6XXX 6000–6999Available FRANKLIN LA
— 337-413-7XXX 7000–7999Available FRANKLIN LA
2024-12-03 337-413-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J FRANKLIN LA
— 337-413-9XXX 9000–9999Reserved BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FRANKLIN LA

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.