NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

9 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 872
NEW CINGULAR WIRELESS PCS, LLC - IL 8
8X8, INC. 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
2010-09-03 872-221-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN09 IL
2010-08-18 872-588-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2010-08-18 872-588-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2010-08-06 872-213-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN02 IL
2010-06-04 872-228-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN09 IL
2010-04-27 872-228-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN09 IL
2010-03-25 872-213-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN02 IL
2010-02-25 872-216-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-25 872-216-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2010-02-11 872-228-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN09 IL
2010-02-11 872-228-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN09 IL
2010-02-11 872-228-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN09 IL
2010-02-10 872-228-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2010-02-10 872-228-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2010-02-03 872-222-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2010-02-03 872-222-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2010-02-03 872-222-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2010-02-03 872-222-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2010-02-03 872-222-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2010-01-08 872-247-0XXX 0000–0999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2010-01-08 872-247-9XXX 9000–9999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN07 IL
2009-12-21 872-825-0XXX 0000–0999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-12-21 872-825-9XXX 9000–9999Assigned ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2009-10-20 872-201-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2009-08-12 872-222-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 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.