NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

22 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, last 30 days — NPA 224
NEW CINGULAR WIRELESS PCS, LLC - IL 11
ONVOY, LLC 6
VERSATEL LLC 1
INTRADO COMMUNICATIONS, LLC 1
EXIANT COMMUNICATIONS LLC 1
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
2008-05-19 224-353-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K ROSELLE IL
2008-05-19 224-543-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HALF DAY IL
2008-05-16 224-532-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEELING IL
2008-05-16 224-532-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEELING IL
2008-05-15 224-542-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2008-05-15 224-542-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2008-05-15 224-542-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2008-05-15 224-542-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2008-05-15 224-542-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2008-05-15 224-542-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2008-05-09 224-563-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2008-05-09 224-563-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2008-05-09 224-563-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2008-05-08 224-484-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 DUNDEE IL
2008-05-08 224-484-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 DUNDEE IL
2008-05-08 224-484-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 DUNDEE IL
2008-05-07 224-535-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2008-05-07 224-856-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2008-05-07 224-856-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2008-05-06 224-444-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAKE VILLA IL
2008-05-01 224-306-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2008-05-01 224-357-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CARY IL
2008-05-01 224-532-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
2008-05-01 224-563-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
2008-05-01 224-654-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HUNTLEY IL
2008-05-01 224-856-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELGIN IL
2008-04-30 224-387-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2008-04-30 224-387-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2008-04-30 224-534-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2008-04-30 224-534-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2008-04-30 224-772-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2008-04-30 224-772-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2008-04-28 224-260-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GLENVIEW IL
2008-04-28 224-306-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2008-04-28 224-545-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2008-04-28 224-616-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GLENVIEW IL
2008-04-24 224-678-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2008-04-23 224-425-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2008-04-23 224-425-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2008-04-23 224-544-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LAKEFOREST IL
2008-04-16 224-637-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WAUKEGAN IL
2008-04-01 224-637-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKEGAN IL
2008-03-21 224-532-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WHEELING IL
2008-03-20 224-225-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J FOX LAKE IL
2008-03-20 224-544-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAKEFOREST IL
2008-03-20 224-848-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BARRINGTON IL
2008-03-17 224-563-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2008-03-17 224-563-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2008-03-06 224-353-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROSELLE IL
2008-02-28 224-678-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN 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.