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 224
CENTURYLINK COMMUNICATIONS, LLC 32
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
2015-01-14 224-505-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINNETKA IL
2014-07-10 224-813-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DEERFIELD IL
2014-07-10 224-813-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DEERFIELD IL
2014-06-19 224-732-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WAUCONDA IL
2014-06-13 224-337-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FOX LAKE IL
2014-06-13 224-352-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HALF DAY IL
2014-06-13 224-603-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ANTIOCH IL
2014-06-13 224-650-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUNTLEY IL
2014-06-13 224-701-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAKE VILLA IL
2014-06-13 224-814-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROUND LAKE IL
2014-06-13 224-888-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARY IL
2014-06-10 224-813-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DEERFIELD IL
2014-01-30 224-777-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAMPSHIRE IL
2014-01-30 224-901-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PISTAKHLDS IL
2014-01-30 224-990-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLATO CTR IL
2014-01-23 224-408-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILMETTE IL
2014-01-23 224-432-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GLENVIEW IL
2013-06-10 224-801-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PALATINE IL
2013-06-10 224-802-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DUNDEE IL
2013-06-06 224-813-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DEERFIELD IL
2013-06-05 224-501-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NORTHBROOK IL
2013-06-05 224-541-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAYSLAKE IL
2013-06-04 224-228-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BARRINGTON IL
2013-06-04 224-242-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELGIN IL
2013-06-04 224-302-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WAUKEGAN IL
2013-06-04 224-404-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELK GROVE IL
2013-06-04 224-410-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALGONQUIN IL
2013-05-31 224-240-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DESPLAINES IL
2013-05-30 224-304-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ZION IL
2013-05-30 224-601-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SKOKIE IL
2013-05-29 224-307-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EVANSTON IL
2013-05-29 224-318-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ARLIGTNHTS 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.