NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 570
IDT AMERICA, CORP. - PA 27
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
2017-12-04 570-551-1XXX 1000–1999Assigned IDT AMERICA, CORP. - PA 213C LEWISBURG PA
2013-09-23 570-608-1XXX 1000–1999Assigned IDT AMERICA, CORP. - PA 213C SWEET VLY PA
2013-01-14 570-277-9XXX 9000–9999Assigned IDT AMERICA, CORP. - PA 213C NEWPHLDLPH PA
2013-01-14 570-810-0XXX 0000–0999Assigned IDT AMERICA, CORP. - PA 213C TAMAQUA PA
2012-12-21 570-599-3XXX 3000–3999Assigned IDT AMERICA, CORP. - PA 213C HAZLETON PA
2010-04-12 570-597-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C MIFFLINBG PA
2010-01-21 570-261-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C MOUNTANTOP PA
2010-01-15 570-310-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C DALLAS PA
2010-01-15 570-667-1XXX 1000–1999Assigned IDT AMERICA, CORP. - PA 213C MUHLENBURG PA
2010-01-15 570-868-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C NUANGOLA PA
2010-01-15 570-901-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C TRUCKSVL PA
2009-12-28 570-359-1XXX 1000–1999Assigned IDT AMERICA, CORP. - PA 213C CNYNGHDRMS PA
2009-10-22 570-987-4XXX 4000–4999Assigned IDT AMERICA, CORP. - PA 213C NUREMBERG PA
2009-07-02 570-791-1XXX 1000–1999Assigned IDT AMERICA, CORP. - PA 213C WAPWALLOPN PA
2008-09-26 570-355-4XXX 4000–4999Assigned IDT AMERICA, CORP. - PA 213C POCONOLAKE PA
2008-09-26 570-683-4XXX 4000–4999Assigned IDT AMERICA, CORP. - PA 213C ORANGEVL PA
2008-09-26 570-925-4XXX 4000–4999Assigned IDT AMERICA, CORP. - PA 213C BENTON PA
2008-08-29 570-841-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C SHICKSHINY PA
2007-09-14 570-215-0XXX 0000–0999Assigned IDT AMERICA, CORP. - PA 213C WHITEHAVEN PA
2007-09-14 570-338-1XXX 1000–1999Assigned IDT AMERICA, CORP. - PA 213C KINGSTON PA
2007-09-14 570-427-0XXX 0000–0999Assigned IDT AMERICA, CORP. - PA 213C WEATHERLY PA
2007-09-14 570-458-7XXX 7000–7999Assigned IDT AMERICA, CORP. - PA 213C MILLVILLE PA
2007-09-14 570-520-4XXX 4000–4999Assigned IDT AMERICA, CORP. - PA 213C BERWICK PA
2007-09-14 570-636-6XXX 6000–6999Assigned IDT AMERICA, CORP. - PA 213C FREELAND PA
2007-09-14 570-733-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C NANTICOKE PA
2007-09-14 570-771-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C PLYMOUTH PA
2007-07-19 570-993-2XXX 2000–2999Assigned IDT AMERICA, CORP. - PA 213C BLOOMSBURG PA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.