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
2022-08-23 872-314-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2022-08-23 872-314-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2022-08-23 872-314-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2022-08-23 872-314-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2022-08-23 872-314-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2022-08-16 872-298-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2022-08-15 872-261-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-08-15 872-463-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-08-15 872-463-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-08-15 872-463-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-08-15 872-463-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2022-08-05 872-316-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2022-08-05 872-316-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2022-08-02 872-277-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2022-08-02 872-337-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2022-08-02 872-337-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2022-08-02 872-337-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2022-07-28 872-299-0XXX 0000–0999Assigned TELNYX LLC 073H CHICGOZN01 IL
2022-07-26 872-313-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2022-07-26 872-314-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2022-07-26 872-314-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2022-07-26 872-314-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2022-07-26 872-314-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2022-07-26 872-867-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2022-07-22 872-314-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2022-07-21 872-627-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2022-07-21 872-627-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2022-07-21 872-627-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2022-07-21 872-627-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2022-07-21 872-627-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2022-07-21 872-627-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2022-07-07 872-306-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2022-07-07 872-306-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2022-07-07 872-306-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2022-07-07 872-306-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2022-07-07 872-336-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-07-06 872-208-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN02 IL
2022-07-06 872-627-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN02 IL
2022-07-06 872-627-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN02 IL
2022-06-27 872-355-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN01 IL
2022-06-06 872-244-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2022-06-06 872-283-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2022-06-06 872-286-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-06-06 872-286-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-06-06 872-343-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2022-06-06 872-453-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-06-06 872-453-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-06-06 872-453-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-06-06 872-453-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2022-06-06 872-453-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN09 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.