NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 856-291

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 856-291 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 856 blocks

Most active assignees, all time — NPA 856
PAETEC ITEL, LLC 3
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 2
LEVEL 3 COMMUNICATIONS, LLC - NJ 2
BANDWIDTH.COM CLEC, LLC - NJ 2
NEW CINGULAR WIRELESS PCS, LLC - DC 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
2010-11-01 856-291-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F MOORESTOWN NJ
2010-06-24 856-291-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOORESTOWN NJ
2010-10-14 856-291-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J MOORESTOWN NJ
2009-10-14 856-291-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J MOORESTOWN NJ
2009-10-14 856-291-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J MOORESTOWN NJ
2011-03-16 856-291-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MOORESTOWN NJ
2011-05-25 856-291-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F MOORESTOWN NJ
2010-09-17 856-291-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 MOORESTOWN NJ
2010-09-17 856-291-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 MOORESTOWN NJ
2012-02-15 856-291-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MOORESTOWN NJ

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.