NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 417-392

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 417-392 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 417 blocks

Most active assignees, all time — NPA 417
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 4
TELEPORT COMMUNICATIONS AMERICA, LLC - MO 1
PAETEC ITEL, LLC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 1
LEVEL 3 COMMUNICATIONS, LLC - MO 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
— 417-392-0XXX 0000–0999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WEBB CITY MO
— 417-392-1XXX 1000–1999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WEBB CITY MO
2012-05-31 417-392-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 WEBB CITY MO
2012-07-30 417-392-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E WEBB CITY MO
2013-11-08 417-392-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7594 WEBB CITY MO
2011-10-21 417-392-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WEBB CITY MO
2013-03-29 417-392-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 WEBB CITY MO
— 417-392-7XXX 7000–7999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WEBB CITY MO
2014-02-04 417-392-8XXX 8000–8999Assigned CSC VOICE, LLC 612K WEBB CITY MO
2018-04-26 417-392-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WEBB CITY MO

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.