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 845
TC SYSTEMS, INC. - NY 54
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
2023-03-24 845-937-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 FALLSBURG NY
2023-03-03 845-864-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 JEFFERSNVL NY
2023-01-19 845-916-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 PORTJERVIS NY
2022-04-26 845-347-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 POUGHKEPSI NY
2022-03-08 845-908-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 WASHIGTNVL NY
2022-03-04 845-493-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 PAWLING NY
2020-10-26 845-816-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 CHESTER NY
2019-08-19 845-990-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 MONTGOMERY NY
2019-04-29 845-319-0XXX 0000–0999Assigned TC SYSTEMS, INC. - NY 7140 PATTERSON NY
2019-04-11 845-824-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 MAYBROOK NY
2019-01-30 845-383-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 KINGSTON NY
2018-11-16 845-407-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 HYDE PARK NY
2018-10-02 845-261-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 HIGHLAND NY
2018-06-07 845-316-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 BLOOMINGBG NY
2018-05-22 845-592-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 HOPEWLLJCT NY
2018-04-25 845-450-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 CONGERS NY
2018-01-19 845-743-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 MAHOPAC NY
2017-11-06 845-305-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 BEACON NY
2017-10-18 845-460-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 HIGHLANDML NY
2017-07-07 845-655-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 MONROE NY
2016-06-08 845-403-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 SPRING VLY NY
2016-03-15 845-792-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 PIERMONT NY
2015-06-09 845-851-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 WALLKILL NY
2015-05-15 845-394-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 MIDDLETOWN NY
2014-02-19 845-673-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 SCOTCHTOWN NY
2014-01-16 845-218-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 WAPIGRSFLS NY
2012-12-05 845-275-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 NEWBURGH NY
2012-12-05 845-288-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 BEACON NY
2012-06-04 845-210-0XXX 0000–0999Assigned TC SYSTEMS, INC. - NY 7140 ELLENVILLE NY
2012-06-04 845-217-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 SAUGERTIES NY
2012-06-04 845-237-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 CORNWALL NY
2012-06-04 845-251-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 SHOKAN NY
2012-06-04 845-295-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 LIBERTY NY
2012-06-04 845-419-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 NEW PALTZ NY
2012-06-04 845-684-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 WOODSTOCK NY
2012-06-04 845-887-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 CALLICOON NY
2012-06-04 845-985-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 GRAHAMSVL NY
2012-03-30 845-448-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 ROSENDALE NY
2012-01-09 845-580-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 PIERMONT NY
2011-12-29 845-615-7XXX 7000–7999Assigned TC SYSTEMS, INC. - NY 7140 GOSHEN NY
2011-05-18 845-443-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 KINGSTON NY
2009-06-11 845-397-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 MONTICELLO NY
2008-02-07 845-474-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 PEARLRIVER NY
2008-02-07 845-474-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 PEARLRIVER NY
2008-02-07 845-474-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 PEARLRIVER NY
2006-08-16 845-826-8XXX 8000–8999Assigned TC SYSTEMS, INC. - NY 7140 NEW CITY NY
2006-03-30 845-612-0XXX 0000–0999Assigned TC SYSTEMS, INC. - NY 7140 BREWSTER NY
2003-04-16 845-942-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 HAVERSTRAW NY
2002-10-14 845-402-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 PEEKSKILL NY
2002-03-13 845-201-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 PEARLRIVER 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.