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
2022-02-22 872-318-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-22 872-318-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-22 872-318-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-22 872-318-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-22 872-318-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 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
2022-02-17 872-317-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 872-317-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-14 872-280-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-02-14 872-294-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-02-14 872-346-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-02-14 872-346-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-02-14 872-346-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-02-14 872-346-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2022-02-10 872-355-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-10 872-355-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-10 872-355-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-10 872-355-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-10 872-355-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-09 872-294-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2022-02-02 872-336-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-02-02 872-336-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2022-02-02 872-336-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 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
2022-01-26 872-946-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN03 IL
2021-12-29 872-286-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2021-12-29 872-286-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2021-12-21 872-822-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 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.