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
2004-12-21 224-623-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ALGONQUIN IL
2004-12-20 224-265-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2004-12-16 224-210-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2004-12-16 224-220-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
2004-12-14 224-521-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K GLENVIEW IL
2004-12-14 224-632-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K DEERFIELD IL
2004-12-10 224-210-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2004-12-06 224-210-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2004-11-29 224-766-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GLENVIEW IL
2004-11-24 224-220-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DESPLAINES IL
2004-11-24 224-220-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DESPLAINES IL
2004-11-23 224-210-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2004-11-11 224-293-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K DUNDEE IL
2004-11-11 224-569-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K HUNTLEY IL
2004-11-10 224-265-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL
2004-11-10 224-381-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2004-11-10 224-639-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2004-11-10 224-639-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2004-11-10 224-639-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2004-11-09 224-805-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2004-11-03 224-207-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K LIBERTYVL IL
2004-11-03 224-218-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K HAMPSHIRE IL
2004-11-03 224-420-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K EVANSTON IL
2004-11-03 224-430-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2004-11-03 224-588-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K WHEELING IL
2004-11-03 224-623-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K ALGONQUIN IL
2004-11-03 224-717-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K ZION IL
2004-11-01 224-218-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C HAMPSHIRE IL
2004-10-19 224-217-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2004-10-15 224-217-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K DESPLAINES IL
2004-10-15 224-359-0XXX 0000–0999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-10-15 224-359-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-09-27 224-217-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2004-09-27 224-217-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2004-09-27 224-217-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2004-09-27 224-217-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2004-09-27 224-217-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2004-09-23 224-521-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GLENVIEW IL
2004-09-21 224-629-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2004-09-20 224-632-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K DEERFIELD IL
2004-09-14 224-402-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ELGIN IL
2004-09-03 224-232-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 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.