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
2019-09-23 872-249-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN01 IL
2019-09-23 872-249-1XXX 1000–1999Assigned TELNYX LLC 073H CHICGOZN01 IL
2019-09-17 872-249-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2019-09-17 872-249-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2019-09-17 872-249-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2019-09-17 872-249-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2019-09-17 872-710-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2019-09-13 872-249-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN01 IL
2019-09-13 872-249-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN01 IL
2019-08-07 872-248-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2019-08-07 872-304-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2019-08-02 872-760-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN10 IL
2019-07-17 872-245-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2019-07-17 872-245-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2019-07-17 872-245-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2019-07-17 872-245-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2019-07-17 872-245-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2019-07-17 872-245-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2019-07-17 872-310-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2019-07-17 872-310-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2019-07-17 872-310-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2019-07-17 872-310-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2019-07-17 872-310-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2019-07-17 872-310-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2019-06-26 872-248-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-06-26 872-248-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-06-17 872-760-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2019-06-17 872-803-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2019-06-11 872-769-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN06 IL
2019-06-10 872-246-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2019-06-10 872-246-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2019-06-10 872-246-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2019-06-10 872-870-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN09 IL
2019-06-10 872-870-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN09 IL
2019-06-10 872-870-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN09 IL
2019-05-24 872-248-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-24 872-248-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-24 872-248-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-21 872-254-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-21 872-307-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-21 872-307-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-21 872-307-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-21 872-307-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-21 872-307-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2019-05-14 872-760-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN10 IL
2019-05-09 872-245-3XXX 3000–3999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN04 IL
2019-05-01 872-703-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2019-05-01 872-703-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2019-04-18 872-245-2XXX 2000–2999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN04 IL
2019-04-09 872-254-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 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.