NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 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
2014-09-16 872-704-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2014-09-16 872-704-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2014-09-12 872-256-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-09-12 872-256-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-09-12 872-256-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-09-12 872-256-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-09-12 872-256-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-09-03 872-228-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN09 IL
2014-09-03 872-666-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN09 IL
2014-09-03 872-703-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2014-09-03 872-703-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2014-09-03 872-777-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-09-02 872-241-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN02 IL
2014-08-15 872-241-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN02 IL
2014-08-15 872-241-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN02 IL
2014-08-05 872-666-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN09 IL
2014-07-30 872-444-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2014-07-25 872-256-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN05 IL
2014-07-09 872-201-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2014-07-08 872-227-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2014-07-08 872-227-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2014-07-08 872-356-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN10 IL
2014-07-02 872-242-0XXX 0000–0999Assigned METROPCS, INC. 5562 CHICGOZN04 IL
2014-06-27 872-639-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-06-27 872-639-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-06-27 872-713-3XXX 3000–3999Assigned METROPCS, INC. 5562 CHICGOZN04 IL
2014-06-27 872-713-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2014-06-27 872-777-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-06-27 872-777-6XXX 6000–6999Assigned METROPCS, INC. 5562 CHICGOZN07 IL
2014-06-27 872-777-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-06-13 872-256-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHICGOZN05 IL
2014-06-04 872-444-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN06 IL
2014-06-02 872-205-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2014-06-02 872-239-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2014-06-02 872-239-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2014-06-02 872-239-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2014-06-02 872-239-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2014-05-29 872-243-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN03 IL
2014-05-19 872-254-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-05-19 872-307-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-05-19 872-888-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN02 IL
2014-05-13 872-704-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-05-13 872-704-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-05-13 872-704-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-05-07 872-256-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-05-07 872-256-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-05-07 872-256-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-05-02 872-806-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN02 IL
2014-04-29 872-713-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2014-04-23 872-212-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN07 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.