NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 920-663

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 920-663 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 920 blocks

Most active assignees, all time — NPA 920
BANDWIDTH.COM CLEC, LLC - WI 3
TELEPORT COMMUNICATIONS AMERICA, LLC WI 2
PEERLESS NETWORK OF WISCONSIN, LLC - WI 2
ONVOY, LLC - WI 2
LEVEL 3 COMMUNICATIONS, LLC - WI 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
2013-04-08 920-663-0XXX 0000–0999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MANITOWOC WI
2011-05-18 920-663-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MANITOWOC WI
2015-03-16 920-663-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MANITOWOC WI
2016-02-09 920-663-3XXX 3000–3999Assigned ONVOY, LLC - WI 225C MANITOWOC WI
2016-02-09 920-663-4XXX 4000–4999Assigned ONVOY, LLC - WI 225C MANITOWOC WI
2013-04-08 920-663-5XXX 5000–5999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MANITOWOC WI
2013-11-06 920-663-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MANITOWOC WI
2014-12-30 920-663-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MANITOWOC WI
2015-03-16 920-663-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MANITOWOC WI
— 920-663-9XXX 9000–9999Reserved TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MANITOWOC WI

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.