NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 516
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
2013-07-08 516-321-2XXX 2000–2999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN01 NY
2013-07-03 516-321-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN01 NY
2013-06-28 516-218-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN03 NY
2013-06-28 516-405-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN03 NY
2013-06-26 516-501-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FARMINGDL NY
2013-06-26 516-580-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NASSAUZN05 NY
2013-06-26 516-949-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NASSAUZN08 NY
2013-06-25 516-590-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN09 NY
2013-06-25 516-590-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN09 NY
2013-06-14 516-725-6XXX 6000–6999Assigned METROPCS, INC. 5562 NASSAUZN02 NY
2013-06-14 516-725-7XXX 7000–7999Assigned METROPCS, INC. 5562 NASSAUZN02 NY
2013-06-14 516-725-8XXX 8000–8999Assigned METROPCS, INC. 5562 NASSAUZN02 NY
2013-06-12 516-580-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2013-06-05 516-405-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN03 NY
2013-06-05 516-405-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN03 NY
2013-05-29 516-586-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2013-05-29 516-725-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN02 NY
2013-04-05 516-206-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2013-04-05 516-206-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2013-04-05 516-206-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2013-04-05 516-231-4XXX 4000–4999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN04 NY
2013-04-05 516-231-5XXX 5000–5999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN04 NY
2013-04-05 516-387-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN01 NY
2013-04-05 516-590-0XXX 0000–0999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN09 NY
2013-04-05 516-590-2XXX 2000–2999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN09 NY
2013-04-02 516-200-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN04 NY
2013-04-02 516-200-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN04 NY
2013-04-02 516-418-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2013-04-02 516-418-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2013-04-02 516-512-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2013-04-02 516-564-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2013-03-29 516-210-0XXX 0000–0999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN07 NY
2013-03-29 516-210-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN07 NY
2013-03-28 516-206-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN06 NY
2013-03-28 516-206-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN06 NY
2013-03-28 516-218-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN03 NY
2013-03-28 516-218-9XXX 9000–9999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN03 NY
2013-03-28 516-418-5XXX 5000–5999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN05 NY
2013-03-28 516-418-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN05 NY
2013-03-28 516-666-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN02 NY
2013-03-28 516-666-9XXX 9000–9999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN02 NY
2013-03-27 516-321-1XXX 1000–1999Assigned IP HORIZON LLC 515J NASSAUZN01 NY
2013-03-18 516-590-1XXX 1000–1999Assigned IP HORIZON LLC 515J NASSAUZN09 NY
2013-03-18 516-595-1XXX 1000–1999Assigned IP HORIZON LLC 515J NASSAUZN08 NY
2013-03-14 516-590-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J NASSAUZN09 NY
2013-03-12 516-246-8XXX 8000–8999Assigned ONVOY, LLC- NY 384C NASSAUZN05 NY
2013-03-12 516-934-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C NASSAUZN08 NY
2013-03-11 516-387-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN01 NY
2013-03-05 516-200-9XXX 9000–9999Assigned CSC VOICE, LLC 612K NASSAUZN04 NY
2013-03-05 516-246-9XXX 9000–9999Assigned CSC VOICE, LLC 612K NASSAUZN05 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.