Thousands-blocks in 337-990

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 337-990 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

VOICESTREAM GSM I, LLC 3

PAETEC ITEL, LLC 2

TELEPORT COMMUNICATIONS AMERICA LA - LLC 1

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 1

LEVEL 3 COMMUNICATIONS, 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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
—	337-990-0XXX	0000–0999	Reserved	PAETEC ITEL, LLC	829J	LK CHARLES	LA
2005-11-02	337-990-1XXX	1000–1999	Assigned	VOICESTREAM GSM I, LLC	150C	LK CHARLES	LA
2005-11-02	337-990-2XXX	2000–2999	Assigned	VOICESTREAM GSM I, LLC	150C	LK CHARLES	LA
—	337-990-3XXX	3000–3999	Available			LK CHARLES	LA
2011-11-04	337-990-4XXX	4000–4999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA	8764	LK CHARLES	LA
2011-11-16	337-990-5XXX	5000–5999	Assigned	CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA	260H	LK CHARLES	LA
2018-03-20	337-990-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA LA - LLC	653C	LK CHARLES	LA
2022-01-10	337-990-7XXX	7000–7999	Assigned	VOICESTREAM GSM I, LLC	150C	LK CHARLES	LA
2004-10-27	337-990-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - LA	3232	LK CHARLES	LA
—	337-990-9XXX	9000–9999	Reserved	PAETEC ITEL, LLC	829J	LK CHARLES	LA

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.