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
2011-02-23 516-943-7XXX 7000–7999Assigned METROPCS, INC. 5562 NASSAUZN08 NY
2011-02-17 516-340-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E COLDSPGHBR NY
2011-02-11 516-350-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2011-02-09 516-362-7XXX 7000–7999Assigned METROPCS, INC. 5562 NASSAUZN06 NY
2011-02-08 516-350-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2011-02-08 516-399-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN04 NY
2011-02-07 516-350-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2011-02-07 516-350-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2011-02-07 516-350-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2011-02-07 516-350-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2011-02-07 516-406-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2011-01-31 516-406-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN02 NY
2011-01-25 516-331-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN01 NY
2011-01-25 516-331-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN01 NY
2011-01-25 516-828-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN08 NY
2011-01-25 516-828-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN08 NY
2011-01-21 516-247-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2011-01-19 516-399-9XXX 9000–9999Assigned METROPCS, INC. 5562 NASSAUZN04 NY
2011-01-17 516-366-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN09 NY
2011-01-11 516-229-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2011-01-11 516-362-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2011-01-11 516-362-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2011-01-11 516-531-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FARMINGDL NY
2011-01-11 516-564-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2011-01-06 516-252-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2011-01-06 516-252-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2011-01-03 516-589-9XXX 9000–9999Assigned METROPCS, INC. 5562 NASSAUZN02 NY
2010-12-21 516-252-5XXX 5000–5999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN05 NY
2010-12-21 516-252-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2010-12-21 516-325-9XXX 9000–9999Assigned IP HORIZON LLC 515J NASSAUZN02 NY
2010-12-21 516-331-3XXX 3000–3999Assigned IP HORIZON LLC 515J NASSAUZN01 NY
2010-12-21 516-331-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN01 NY
2010-12-21 516-341-3XXX 3000–3999Assigned IP HORIZON LLC 515J NASSAUZN03 NY
2010-12-21 516-341-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN03 NY
2010-12-21 516-362-4XXX 4000–4999Assigned IP HORIZON LLC 515J NASSAUZN06 NY
2010-12-21 516-362-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2010-12-21 516-409-7XXX 7000–7999Assigned IP HORIZON LLC 515J NASSAUZN09 NY
2010-12-21 516-413-3XXX 3000–3999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN07 NY
2010-12-21 516-584-5XXX 5000–5999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN07 NY
2010-12-21 516-723-8XXX 8000–8999Assigned IP HORIZON LLC 515J NASSAUZN04 NY
2010-12-21 516-828-4XXX 4000–4999Assigned IP HORIZON LLC 515J NASSAUZN08 NY
2010-12-21 516-828-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN08 NY
2010-12-21 516-830-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN02 NY
2010-12-21 516-882-8XXX 8000–8999Assigned IP HORIZON LLC 515J NASSAUZN09 NY
2010-12-21 516-953-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN04 NY
2010-12-20 516-341-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K NASSAUZN03 NY
2010-12-16 516-325-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2010-12-02 516-350-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NASSAUZN05 NY
2010-11-19 516-362-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN06 NY
2010-11-19 516-362-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN06 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.