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
2022-10-14 872-321-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN05 IL
2022-10-14 872-322-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN06 IL
2022-10-14 872-322-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN06 IL
2022-10-14 872-322-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2022-10-14 872-322-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2022-10-14 872-322-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2022-10-14 872-322-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN06 IL
2022-10-14 872-322-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN06 IL
2022-10-14 872-322-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN06 IL
2022-10-14 872-322-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN06 IL
2022-10-14 872-322-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN06 IL
2022-10-10 872-334-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2022-10-10 872-334-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2022-10-10 872-334-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2022-10-10 872-334-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2022-10-10 872-334-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2022-10-10 872-444-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2022-10-03 872-320-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-03 872-320-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-03 872-320-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-03 872-320-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-03 872-463-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-03 872-463-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-03 872-463-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-03 872-463-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-10-02 872-299-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-10-02 872-299-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-10-02 872-299-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-10-02 872-299-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-10-02 872-299-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-09-20 872-306-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-09-20 872-453-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-09-16 872-306-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2022-09-16 872-306-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2022-09-16 872-306-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2022-09-16 872-334-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN06 IL
2022-09-16 872-334-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN06 IL
2022-09-16 872-334-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN06 IL
2022-09-15 872-319-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-09-15 872-319-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-09-15 872-319-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-09-15 872-319-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-09-15 872-319-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-09-12 872-298-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-09-01 872-299-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-08-30 872-336-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN01 IL
2022-08-30 872-336-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN01 IL
2022-08-30 872-336-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN01 IL
2022-08-30 872-336-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN01 IL
2022-08-30 872-336-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN01 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.