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
2021-06-22 872-664-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-06-22 872-664-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-06-15 872-280-5XXX 5000–5999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN04 IL
2021-06-07 872-280-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2021-06-07 872-345-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-06-07 872-345-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-06-07 872-766-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-06-07 872-910-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-06-07 872-910-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-06-07 872-910-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-06-07 872-910-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-06-07 872-910-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-06-07 872-910-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-06-04 872-274-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN04 IL
2021-06-04 872-280-1XXX 1000–1999Assigned COMMIO, LLC 939H CHICGOZN04 IL
2021-06-04 872-280-2XXX 2000–2999Assigned COMMIO, LLC 939H CHICGOZN04 IL
2021-06-04 872-280-3XXX 3000–3999Assigned COMMIO, LLC 939H CHICGOZN04 IL
2021-06-04 872-280-8XXX 8000–8999Assigned COMMIO, LLC 939H CHICGOZN04 IL
2021-06-02 872-262-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN09 IL
2021-06-02 872-271-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN03 IL
2021-06-02 872-283-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN07 IL
2021-06-02 872-284-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN05 IL
2021-06-02 872-678-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN11 IL
2021-06-02 872-732-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN08 IL
2021-06-02 872-758-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN10 IL
2021-05-27 872-835-0XXX 0000–0999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-1XXX 1000–1999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-27 872-835-9XXX 9000–9999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-05-26 872-283-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN07 IL
2021-05-21 872-277-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN05 IL
2021-05-19 872-271-4XXX 4000–4999Assigned IP HORIZON LLC 515J CHICGOZN03 IL
2021-05-19 872-275-0XXX 0000–0999Assigned IP HORIZON LLC 515J CHICGOZN01 IL
2021-05-19 872-277-5XXX 5000–5999Assigned IP HORIZON LLC 515J CHICGOZN05 IL
2021-05-19 872-283-8XXX 8000–8999Assigned IP HORIZON LLC 515J CHICGOZN07 IL
2021-05-19 872-284-9XXX 9000–9999Assigned HD CARRIER LLC 321J CHICGOZN05 IL
2021-05-19 872-732-8XXX 8000–8999Assigned IP HORIZON LLC 515J CHICGOZN08 IL
2021-05-19 872-758-9XXX 9000–9999Assigned IP HORIZON LLC 515J CHICGOZN10 IL
2021-05-18 872-273-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN03 IL
2021-05-18 872-732-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN08 IL
2021-05-17 872-678-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN11 IL
2021-05-08 872-262-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN09 IL
2021-05-04 872-910-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2021-05-01 872-283-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J 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.