NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

22 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, 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
2007-02-15 224-587-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-02-15 224-587-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-02-15 224-587-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-02-13 224-552-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J LAKEFOREST IL
2007-02-07 224-578-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2007-01-26 224-858-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HUNTLEY IL
2007-01-25 224-422-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DESPLAINES IL
2007-01-25 224-422-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DESPLAINES IL
2007-01-15 224-232-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K ARLIGTNHTS IL
2007-01-15 224-293-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J DUNDEE IL
2007-01-15 224-552-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K LAKEFOREST IL
2007-01-15 224-569-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HUNTLEY IL
2007-01-09 224-723-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J NORTHBROOK IL
2006-12-28 224-656-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WAUKEGAN IL
2006-12-28 224-656-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WAUKEGAN IL
2006-12-27 224-723-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-27 224-723-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-27 224-723-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-27 224-856-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2006-12-22 224-321-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKEGAN IL
2006-12-22 224-321-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKEGAN IL
2006-12-22 224-321-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2006-12-22 224-321-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2006-12-22 224-321-7XXX 7000–7999Assigned METROPCS, INC. 5562 WAUKEGAN IL
2006-12-19 224-653-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ROSELLE IL
2006-12-19 224-653-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J ROSELLE IL
2006-12-14 224-321-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WAUKEGAN IL
2006-12-13 224-374-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-13 224-374-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-13 224-374-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-13 224-374-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-13 224-374-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-13 224-374-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-12-07 224-422-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2006-11-30 224-587-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-11-30 224-587-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-11-30 224-587-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-11-30 224-587-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-11-30 224-587-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-11-28 224-653-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K ROSELLE IL
2006-11-17 224-789-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J ZION IL
2006-11-15 224-858-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C HUNTLEY IL
2006-11-10 224-372-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C LAKE VILLA IL
2006-11-08 224-585-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C PARK RIDGE IL
2006-11-03 224-789-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ZION IL
2006-11-02 224-225-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C FOX LAKE IL
2006-11-01 224-678-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ALGONQUIN IL
2006-11-01 224-789-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ZION IL
2006-10-30 224-374-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2006-10-30 224-374-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK 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.