NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 337-333

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 337-333 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
PAETEC ITEL, LLC 3
ONVOY, LLC - LA 3
BANDWIDTH.COM CLEC, LLC - LA 2
TON80 COMMUNICATIONS, LLC 1
COMMIO, 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
2021-01-11 337-333-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F RAYNE LA
2022-10-14 337-333-1XXX 1000–1999Assigned COMMIO, LLC 939H RAYNE LA
2020-12-23 337-333-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F RAYNE LA
— 337-333-3XXX 3000–3999Reserved PAETEC ITEL, LLC 829J RAYNE LA
2021-01-26 337-333-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E RAYNE LA
2021-01-26 337-333-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E RAYNE LA
— 337-333-6XXX 6000–6999Reserved PAETEC ITEL, LLC 829J RAYNE LA
2022-03-11 337-333-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J RAYNE LA
2022-08-30 337-333-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E RAYNE LA
— 337-333-9XXX 9000–9999Reserved PAETEC ITEL, LLC 829J RAYNE 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.