NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 516
ONVOY, LLC- NY 4
CSC WIRELESS, LLC 3
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
2001-04-11 516-240-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2001-04-11 516-240-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2001-04-11 516-992-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN06 NY
2001-04-11 516-992-8XXX 8000–8999Assigned CSC VOICE, LLC 612K NASSAUZN06 NY
2001-04-10 516-802-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN07 NY
2001-03-02 516-801-9XXX 9000–9999Assigned AT&T - LOCAL 7421 NASSAUZN04 NY
2001-02-09 516-240-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN05 NY
2001-02-09 516-240-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN05 NY
2001-01-25 516-408-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NASSAUZN05 NY
2000-12-04 516-302-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN02 NY
2000-12-04 516-403-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN04 NY
2000-11-22 516-403-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN04 NY
2000-10-27 516-861-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN08 NY
2000-10-25 516-586-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2000-10-25 516-837-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN03 NY
2000-10-19 516-403-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN04 NY
2000-10-17 516-240-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2000-10-10 516-870-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J NASSAUZN08 NY
2000-10-05 516-918-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN01 NY
2000-10-05 516-918-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN01 NY
2000-10-02 516-203-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2000-09-28 516-302-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN02 NY
2000-09-28 516-730-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN07 NY
2000-09-22 516-224-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 COLDSPGHBR NY
2000-08-18 516-301-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J NASSAUZN01 NY
2000-08-18 516-417-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J NASSAUZN05 NY
2000-08-18 516-688-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NASSAUZN08 NY
2000-08-18 516-714-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J NASSAUZN07 NY
2000-08-18 516-945-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J NASSAUZN04 NY
2000-08-15 516-203-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2000-07-25 516-302-2XXX 2000–2999Assigned TC SYSTEMS, INC. - NY 7140 NASSAUZN02 NY
2000-07-17 516-765-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN09 NY
2000-07-13 516-809-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN09 NY
2000-07-12 516-714-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN07 NY
2000-07-10 516-765-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN09 NY
2000-07-10 516-765-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN09 NY
2000-07-10 516-809-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN09 NY
2000-07-10 516-927-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FARMINGDL NY
— 516-414-0XXX 0000–0999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
— 516-414-1XXX 1000–1999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
— 516-414-2XXX 2000–2999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
— 516-414-4XXX 4000–4999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
— 516-495-4XXX 4000–4999Assigned CSC VOICE, LLC 612K NASSAUZN08 NY
— 516-801-0XXX 0000–0999Assigned CSC VOICE, LLC 612K NASSAUZN04 NY
— 516-801-1XXX 1000–1999Assigned CSC VOICE, LLC 612K NASSAUZN04 NY
— 516-801-2XXX 2000–2999Assigned CSC VOICE, LLC 612K NASSAUZN04 NY
— 516-801-3XXX 3000–3999Assigned CSC VOICE, LLC 612K NASSAUZN04 NY
— 516-801-4XXX 4000–4999Assigned CSC VOICE, LLC 612K NASSAUZN04 NY
— 516-802-2XXX 2000–2999Assigned CSC VOICE, LLC 612K NASSAUZN07 NY
— 516-802-3XXX 3000–3999Assigned CSC VOICE, LLC 612K NASSAUZN07 NY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.