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 224
ACCESS ONE, INC. - IL 36
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
2017-06-01 224-204-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 EVANSTON IL
2016-09-20 224-219-4XXX 4000–4999Assigned ACCESS ONE, INC. - IL 5447 WAUKEGAN IL
2016-09-19 224-487-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 CARY IL
2013-09-04 224-432-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 GLENVIEW IL
2013-07-09 224-303-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 WAUKEGAN IL
2013-07-09 224-303-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 WAUKEGAN IL
2013-07-09 224-303-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 WAUKEGAN IL
2011-07-05 224-935-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 SKOKIE IL
2011-03-22 224-765-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 HIGHLANDPK IL
2009-08-11 224-221-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 NORTHBROOK IL
2009-01-26 224-325-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 ELGIN IL
2009-01-26 224-698-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 ROSELLE IL
2009-01-26 224-725-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 DESPLAINES IL
2008-10-15 224-676-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 WHEELING IL
2008-08-25 224-387-7XXX 7000–7999Assigned ACCESS ONE, INC. - IL 5447 ARLIGTNHTS IL
2008-08-25 224-534-4XXX 4000–4999Assigned ACCESS ONE, INC. - IL 5447 SKOKIE IL
2008-08-25 224-563-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 DESPLAINES IL
2008-05-19 224-306-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 NORTHBROOK IL
2008-05-19 224-306-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 NORTHBROOK IL
2007-11-07 224-770-4XXX 4000–4999Assigned ACCESS ONE, INC. - IL 5447 BARRINGTON IL
2007-10-19 224-770-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 BARRINGTON IL
2006-07-07 224-225-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 FOX LAKE IL
2006-07-07 224-267-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 ANTIOCH IL
2006-07-07 224-512-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 BARRINGTON IL
2006-07-07 224-677-7XXX 7000–7999Assigned ACCESS ONE, INC. - IL 5447 LAKEZURICH IL
2006-06-27 224-357-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 CARY IL
2006-06-22 224-260-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 GLENVIEW IL
2006-06-22 224-377-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 HALF DAY IL
2006-06-22 224-399-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 WAUKEGAN IL
2006-02-15 224-265-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 ELK GROVE IL
2005-12-29 224-212-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 LAKEFOREST IL
2005-12-29 224-330-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 NORTHBROOK IL
2005-12-29 224-444-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 LAKE VILLA IL
2005-12-29 224-520-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 ROSELLE IL
2005-12-29 224-569-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 HUNTLEY IL
2005-12-29 224-836-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 PALATINE IL

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.