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 332
TC SYSTEMS, INC. - NY 36
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2025-01-16 332-291-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2025-01-16 332-291-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2025-01-16 332-291-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2024-02-15 332-289-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2024-02-15 332-289-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2024-02-15 332-289-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2024-02-15 332-289-9XXX 9000–9999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2024-01-18 332-289-1XXX 1000–1999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-272-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-0XXX 0000–0999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-1XXX 1000–1999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 332-274-9XXX 9000–9999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2022-10-27 332-287-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2022-03-23 332-733-1XXX 1000–1999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2022-03-23 332-733-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2021-09-08 332-253-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2021-07-30 332-345-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-0XXX 0000–0999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-1XXX 1000–1999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2020-11-04 332-243-9XXX 9000–9999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2019-10-22 332-400-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2019-05-17 332-600-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY

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.