NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 337-336

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 337-336 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 5
TON80 COMMUNICATIONS, LLC 1
TELEPORT COMMUNICATIONS AMERICA LA - LLC 1
METROPCS, INC. 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 337-336-0XXX 0000–0999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 VL PLATTE LA
— 337-336-1XXX 1000–1999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 VL PLATTE LA
— 337-336-2XXX 2000–2999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 VL PLATTE LA
— 337-336-3XXX 3000–3999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 VL PLATTE LA
2015-06-02 337-336-4XXX 4000–4999Assigned METROPCS, INC. 5562 VL PLATTE LA
2017-02-27 337-336-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C VL PLATTE LA
2022-03-11 337-336-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J VL PLATTE LA
2014-07-01 337-336-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VL PLATTE LA
2020-09-25 337-336-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 VL PLATTE LA
2011-04-01 337-336-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 VL PLATTE 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.