NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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 815
ACCESS ONE, INC. - IL 40
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2006-07-11 815-268-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 ONARGA IL
2006-07-11 815-287-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 VERONA IL
2006-07-11 815-290-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 MINOOKA IL
2006-07-11 815-305-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 GARDNER IL
2006-07-11 815-308-4XXX 4000–4999Assigned ACCESS ONE, INC. - IL 5447 WOODSTOCK IL
2006-07-11 815-310-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 UTICA IL
2006-07-11 815-314-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 MANHATTAN IL
2006-07-11 815-317-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 CRESCENTCY IL
2006-07-11 815-318-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 MORRIS IL
2006-07-11 815-322-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 MCHENRY IL
2006-07-11 815-390-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 BRAIDWOOD IL
2006-07-11 815-415-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 SENECA IL
2006-07-11 815-421-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 HERSCHER IL
2006-07-11 815-423-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 ELWOOD IL
2006-07-11 815-448-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 MAZON IL
2006-07-11 815-506-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 UNION IL
2006-07-11 815-515-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 WATSEKA IL
2006-07-11 815-534-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 FRANKFORT IL
2006-07-11 815-587-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 OTTAWA IL
2006-07-11 815-596-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 MARENGO IL
2006-07-11 815-695-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 NEWARK IL
2006-07-11 815-707-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 GILMAN IL
2006-07-11 815-717-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 NEW LENOX IL
2006-07-11 815-736-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 LISBON IL
2006-07-11 815-770-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 HARVARD IL
2006-07-11 815-792-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 HARDING IL
2006-07-11 815-883-6XXX 6000–6999Assigned ACCESS ONE, INC. - IL 5447 OGLESBY IL
2006-07-11 815-916-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 PLATTVILLE IL
2006-07-11 815-926-0XXX 0000–0999Assigned ACCESS ONE, INC. - IL 5447 WILMINGTON IL
2006-06-22 815-422-7XXX 7000–7999Assigned ACCESS ONE, INC. - IL 5447 ST ANNE IL
2006-06-22 815-450-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 MOMENCE IL
2006-06-21 815-306-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 LOCKPORT IL
2006-06-21 815-465-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 GRANT PARK IL
2006-06-21 815-579-3XXX 3000–3999Assigned ACCESS ONE, INC. - IL 5447 LA SALLE IL
2006-06-21 815-907-0XXX 0000–0999Assigned ACCESS ONE, INC. - IL 5447 MANTENO IL
2005-12-29 815-230-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 PLAINFIELD IL
2005-12-29 815-295-8XXX 8000–8999Assigned ACCESS ONE, INC. - IL 5447 KANKAKEE IL
2005-12-29 815-409-4XXX 4000–4999Assigned ACCESS ONE, INC. - IL 5447 JOLIET IL
2005-12-29 815-518-1XXX 1000–1999Assigned ACCESS ONE, INC. - IL 5447 COAL CITY IL
2005-12-29 815-526-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 CRYSTAL LK IL

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.