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
2021-09-14 224-550-8XXX 8000–8999Assigned COMMIO, LLC 939H ELK GROVE IL
2021-09-14 224-550-9XXX 9000–9999Assigned COMMIO, LLC 939H ELK GROVE IL
2021-09-13 224-341-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SKOKIE IL
2021-09-10 224-319-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DESPLAINES IL
2021-09-10 224-354-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DESPLAINES IL
2021-09-10 224-417-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EVANSTON IL
2021-09-09 224-397-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-09-09 224-397-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-09-09 224-509-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-08-31 224-416-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-08-31 224-416-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-08-31 224-416-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-08-31 224-416-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-08-31 224-416-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-08-24 224-840-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2021-08-12 224-403-3XXX 3000–3999Assigned ONVOY, LLC 224C WILMETTE IL
2021-08-12 224-403-4XXX 4000–4999Assigned ONVOY, LLC 224C WILMETTE IL
2021-08-12 224-403-5XXX 5000–5999Assigned ONVOY, LLC 224C WILMETTE IL
2021-08-12 224-403-6XXX 6000–6999Assigned ONVOY, LLC 224C WILMETTE IL
2021-08-11 224-393-1XXX 1000–1999Assigned ONVOY, LLC 224C HUNTLEY IL
2021-08-11 224-393-2XXX 2000–2999Assigned ONVOY, LLC 224C HUNTLEY IL
2021-08-11 224-393-7XXX 7000–7999Assigned ONVOY, LLC 224C HUNTLEY IL
2021-08-11 224-393-8XXX 8000–8999Assigned ONVOY, LLC 224C HUNTLEY IL
2021-08-10 224-398-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ARLIGTNHTS IL
2021-08-10 224-840-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2021-08-09 224-396-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BARRINGTON IL
2021-08-03 224-376-6XXX 6000–6999Assigned ONVOY, LLC 224C FOX LAKE IL
2021-08-03 224-391-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-391-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-03 224-396-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
2021-08-03 224-397-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-08-03 224-397-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-08-03 224-445-5XXX 5000–5999Assigned ONVOY, LLC 224C ANTIOCH IL
2021-08-03 224-445-6XXX 6000–6999Assigned ONVOY, LLC 224C ANTIOCH IL
2021-08-03 224-445-7XXX 7000–7999Assigned ONVOY, LLC 224C ANTIOCH IL
2021-08-02 224-384-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-02 224-384-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-02 224-384-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-02 224-384-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-08-02 224-389-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-08-02 224-389-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-08-02 224-389-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 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.