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
2026-09-15 872-880-1XXX 1000–1999Assigned 8X8, INC. 193E CHICGOZN01 IL
2026-09-09 872-500-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2026-09-09 872-500-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2026-09-02 872-381-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2026-09-02 872-387-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2026-09-02 872-387-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2026-09-02 872-396-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2026-09-02 872-396-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2026-09-02 872-396-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2026-08-19 872-263-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-08-19 872-263-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-08-19 872-291-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2026-08-19 872-343-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2026-08-19 872-388-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2026-08-19 872-394-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2026-08-19 872-799-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2026-08-19 872-799-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2026-08-18 872-387-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHICGOZN09 IL
2026-08-18 872-387-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHICGOZN09 IL
2026-08-14 872-899-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2026-08-14 872-899-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2026-08-06 872-388-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2026-08-06 872-388-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2026-08-06 872-392-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2026-08-06 872-394-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2026-08-06 872-394-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2026-08-06 872-760-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2026-08-06 872-899-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-08-06 872-899-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2026-08-06 872-900-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2026-08-04 872-367-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHICGOZN04 IL
2026-08-04 872-855-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHICGOZN04 IL
2026-08-04 872-855-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHICGOZN04 IL
2026-07-21 872-251-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2026-07-21 872-251-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2026-07-21 872-291-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2026-07-21 872-291-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2026-07-21 872-291-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2026-07-21 872-384-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2026-07-21 872-391-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2026-07-21 872-391-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2026-07-21 872-391-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2026-07-21 872-391-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2026-07-21 872-568-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2026-07-21 872-587-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2026-07-21 872-587-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2026-07-21 872-587-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2026-07-21 872-587-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2026-07-21 872-878-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2026-07-21 872-878-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN07 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.