NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 872
TON80 COMMUNICATIONS, LLC 32
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
2022-03-11 872-946-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN03 IL
2022-03-08 872-627-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN02 IL
2022-02-18 872-463-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN10 IL
2022-02-18 872-568-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN07 IL
2022-02-01 872-463-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN10 IL
2022-01-27 872-334-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN06 IL
2022-01-27 872-337-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN05 IL
2022-01-27 872-343-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN07 IL
2022-01-27 872-346-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN04 IL
2022-01-27 872-355-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2022-01-27 872-453-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN09 IL
2022-01-27 872-627-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN02 IL
2022-01-27 872-674-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN08 IL
2021-06-04 872-274-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN04 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
2021-05-18 872-273-3XXX 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
2021-04-08 872-664-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-03-01 872-678-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN11 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.