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
2008-02-28 224-856-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2008-02-26 224-425-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2008-02-26 224-425-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2008-02-26 224-425-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2008-02-11 224-637-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WAUKEGAN IL
2008-02-08 224-563-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2008-01-30 224-616-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GLENVIEW IL
2008-01-30 224-856-2XXX 2000–2999Assigned ONVOY, LLC 224C ELGIN IL
2008-01-22 224-699-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DUNDEE IL
2008-01-17 224-515-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DEERFIELD IL
2008-01-15 224-764-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K ARLIGTNHTS IL
2008-01-14 224-222-1XXX 1000–1999Assigned ONVOY, LLC 224C ELK GROVE IL
2008-01-14 224-433-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2008-01-14 224-699-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DUNDEE IL
2008-01-08 224-543-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HALF DAY IL
2007-12-20 224-208-0XXX 0000–0999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 BARTLETT IL
2007-12-20 224-513-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LIBERTYVL IL
2007-12-20 224-789-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ZION IL
2007-12-18 224-788-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ANTIOCH IL
2007-12-14 224-637-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKEGAN IL
2007-12-14 224-944-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKEGAN IL
2007-12-03 224-554-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DEERFIELD IL
2007-11-21 224-399-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2007-11-13 224-545-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-13 224-545-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2007-11-09 224-764-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ARLIGTNHTS IL
2007-11-08 224-567-6XXX 6000–6999Assigned ONVOY, LLC 224C DESPLAINES IL
2007-11-08 224-654-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K HUNTLEY IL
2007-11-07 224-770-4XXX 4000–4999Assigned ACCESS ONE, INC. - IL 5447 BARRINGTON IL
2007-10-31 224-578-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2007-10-30 224-567-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 DESPLAINES IL
2007-10-30 224-567-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 DESPLAINES IL
2007-10-29 224-735-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ARLIGTNHTS IL
2007-10-29 224-735-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ARLIGTNHTS IL
2007-10-25 224-567-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2007-10-25 224-678-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ALGONQUIN IL
2007-10-19 224-770-5XXX 5000–5999Assigned ACCESS ONE, INC. - IL 5447 BARRINGTON IL
2007-10-10 224-534-3XXX 3000–3999Assigned ONVOY, LLC 224C SKOKIE IL
2007-10-01 224-343-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-10-01 224-343-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-10-01 224-387-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-10-01 224-387-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-10-01 224-387-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 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.