NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 860
IDT AMERICA, CORP. - CT 17
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
2019-05-16 860-850-3XXX 3000–3999Assigned IDT AMERICA, CORP. - CT 466E NIANTIC CT
2017-12-11 860-390-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E LYME CT
2017-12-11 860-400-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E LEDYARD CT
2017-12-11 860-546-5XXX 5000–5999Assigned IDT AMERICA, CORP. - CT 466E CANTERBURY CT
2017-12-11 860-603-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E COLCHESTER CT
2017-12-11 860-650-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E PAWCATUCK CT
2017-12-11 860-809-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E LEBANON CT
2017-12-11 860-891-0XXX 0000–0999Assigned IDT AMERICA, CORP. - CT 466E MOODUS CT
2017-12-11 860-980-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E MYSTIC CT
2010-06-11 860-574-9XXX 9000–9999Assigned IDT AMERICA, CORP. - CT 466E NEW LONDON CT
2009-10-21 860-315-9XXX 9000–9999Assigned IDT AMERICA, CORP. - CT 466E PUTNAM CT
2009-09-25 860-412-9XXX 9000–9999Assigned IDT AMERICA, CORP. - CT 466E DANIELSON CT
2009-08-13 860-591-1XXX 1000–1999Assigned IDT AMERICA, CORP. - CT 466E JEWETTCITY CT
2009-06-16 860-317-1XXX 1000–1999Assigned IDT AMERICA, CORP. - CT 466E PLAINFIELD CT
2008-11-12 860-451-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E NIANTIC CT
2008-11-12 860-892-8XXX 8000–8999Assigned IDT AMERICA, CORP. - CT 466E NORWICH CT
2008-10-03 860-772-2XXX 2000–2999Assigned IDT AMERICA, CORP. - CT 466E NEW LONDON CT

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.