NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 570-665

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 570-665 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 570 blocks

Most active assignees, all time — NPA 570
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 5
NEW CINGULAR WIRELESS PCS, LLC - DC 2
TELEPORT COMMUNICATIONS AMERICA, LLC - PA 1
ONVOY, LLC - PA 1
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
2012-01-09 570-665-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TUNKHANNCK PA
2013-02-25 570-665-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TUNKHANNCK PA
2014-04-18 570-665-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TUNKHANNCK PA
2019-06-20 570-665-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 TUNKHANNCK PA
2015-09-09 570-665-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TUNKHANNCK PA
2019-11-25 570-665-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TUNKHANNCK PA
2019-10-11 570-665-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E TUNKHANNCK PA
— 570-665-7XXX 7000–7999Assigned (pending) TUNKHANNCK PA
2016-03-21 570-665-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TUNKHANNCK PA
2011-11-04 570-665-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TUNKHANNCK PA

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.