NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 302-566

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 302-566 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 302 blocks

Most active assignees, all time — NPA 302
LEVEL 3 COMMUNICATIONS, LLC - DE 2
BANDWIDTH.COM CLEC, LLC - DE 2
TELEPORT COMMUNICATIONS AMERICA, LLC - PA 1
PEERLESS NETWORK OF DELAWARE, LLC - DE 1
ONVOY, LLC - DE 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
2004-10-19 302-566-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - DE 4801 HARRINGTON DE
2005-12-06 302-566-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - DE 4801 HARRINGTON DE
2010-03-04 302-566-2XXX 2000–2999Assigned PEERLESS NETWORK OF DELAWARE, LLC - DE 349F HARRINGTON DE
2009-03-06 302-566-3XXX 3000–3999Assigned CORETEL DELAWARE, INC. - DE 1991 HARRINGTON DE
2016-02-16 302-566-4XXX 4000–4999Assigned ONVOY, LLC - DE 969E HARRINGTON DE
2009-03-24 302-566-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - DE 073F HARRINGTON DE
2009-04-14 302-566-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J HARRINGTON DE
2009-07-06 302-566-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 HARRINGTON DE
2010-01-25 302-566-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - DE 073F HARRINGTON DE
— 302-566-9XXX 9000–9999Reserved TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 HARRINGTON DE

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.