NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 607
TC SYSTEMS, INC. - NY 17
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
2024-03-04 607-491-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 DRYDEN NY
2023-06-01 607-407-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 LANSING NY
2020-10-14 607-298-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 DEPOSIT NY
2020-09-28 607-902-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 NEWARK VLY NY
2020-09-25 607-399-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 HARPURSVL NY
2019-05-20 607-309-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 ENDICOTT NY
2019-05-01 607-604-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 SIDNEY NY
2017-11-20 607-320-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 BAINBRIDGE NY
2017-11-20 607-510-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 WALTON NY
2017-11-20 607-692-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 WHITNEY PT NY
2017-11-20 607-952-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 NORWICH NY
2013-07-30 607-322-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 COOPERSTN NY
2009-06-17 607-878-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 WORCESTER NY
2004-05-24 607-538-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 HOBART NY
2003-01-27 607-429-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 ENDICOTT NY
2003-01-27 607-429-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 ENDICOTT NY
2003-01-27 607-429-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 ENDICOTT NY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.