NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 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 5
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
2012-06-01 224-227-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2012-06-01 224-227-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2012-05-30 224-360-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MUNDELEIN IL
2012-05-30 224-541-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GRAYSLAKE IL
2012-05-25 224-225-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FOX LAKE IL
2012-05-25 224-999-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E EVANSTON IL
2012-05-24 224-250-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2012-05-24 224-250-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2012-05-24 224-250-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2012-05-24 224-250-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2012-05-24 224-279-6XXX 6000–6999Assigned ONVOY, LLC 224C WHEELING IL
2012-05-24 224-324-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2012-05-09 224-215-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WILMETTE IL
2012-05-09 224-255-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WINNETKA IL
2012-05-08 224-655-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BARRINGTON IL
2012-05-03 224-254-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K DESPLAINES IL
2012-05-03 224-300-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E DEERFIELD IL
2012-05-02 224-308-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROUND LAKE IL
2012-05-02 224-308-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROUND LAKE IL
2012-05-01 224-251-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 SKOKIE IL
2012-05-01 224-251-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 SKOKIE IL
2012-05-01 224-251-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 SKOKIE IL
2012-05-01 224-251-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 SKOKIE IL
2012-05-01 224-251-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 SKOKIE IL
2012-04-24 224-324-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2012-04-23 224-215-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WILMETTE IL
2012-04-16 224-541-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GRAYSLAKE IL
2012-04-12 224-324-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLIGTNHTS IL
2012-04-12 224-324-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLIGTNHTS IL
2012-04-10 224-205-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2012-04-10 224-205-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2012-04-04 224-323-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLIGTNHTS IL
2012-03-27 224-214-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WAUKEGAN IL
2012-03-26 224-484-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K DUNDEE IL
2012-03-22 224-214-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2012-03-22 224-634-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BARRINGTON IL
2012-03-12 224-400-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2012-03-12 224-400-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2012-03-12 224-400-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2012-03-08 224-880-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAKEFOREST IL
2012-03-08 224-880-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAKEFOREST IL
2012-03-08 224-990-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PLATO CTR IL
2012-02-29 224-206-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LIBERTYVL IL
2012-02-28 224-229-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2012-02-28 224-229-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2012-02-28 224-229-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2012-02-28 224-245-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2012-02-28 224-245-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2012-02-28 224-245-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2012-02-24 224-214-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKEGAN 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.