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
2014-07-29 516-253-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-29 516-253-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-29 516-253-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-29 516-254-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-29 516-254-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-29 516-254-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-29 516-254-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-29 516-254-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-07-24 516-806-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN08 NY
2014-07-15 516-447-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN07 NY
2014-07-15 516-447-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN07 NY
2014-07-09 516-253-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN02 NY
2014-07-09 516-253-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN02 NY
2014-07-09 516-253-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN02 NY
2014-07-09 516-262-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN09 NY
2014-07-08 516-206-5XXX 5000–5999Assigned HD CARRIER LLC 321J NASSAUZN06 NY
2014-07-08 516-231-3XXX 3000–3999Assigned HD CARRIER LLC 321J NASSAUZN04 NY
2014-07-08 516-243-0XXX 0000–0999Assigned HD CARRIER LLC 321J NASSAUZN05 NY
2014-07-08 516-253-3XXX 3000–3999Assigned HD CARRIER LLC 321J NASSAUZN02 NY
2014-07-08 516-259-9XXX 9000–9999Assigned HD CARRIER LLC 321J NASSAUZN03 NY
2014-07-08 516-387-8XXX 8000–8999Assigned HD CARRIER LLC 321J NASSAUZN01 NY
2014-07-08 516-597-9XXX 9000–9999Assigned HD CARRIER LLC 321J NASSAUZN08 NY
2014-07-08 516-624-5XXX 5000–5999Assigned HD CARRIER LLC 321J NASSAUZN07 NY
2014-07-08 516-777-6XXX 6000–6999Assigned WIDE VOICE, LLC - NY 705G FARMINGDL NY
2014-07-08 516-900-8XXX 8000–8999Assigned HD CARRIER LLC 321J NASSAUZN09 NY
2014-06-23 516-243-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2014-06-17 516-321-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN01 NY
2014-06-17 516-387-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN01 NY
2014-06-17 516-387-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN01 NY
2014-06-11 516-253-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C NASSAUZN02 NY
2014-06-11 516-597-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C NASSAUZN08 NY
2014-06-06 516-778-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2014-06-06 516-778-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2014-06-06 516-778-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2014-06-06 516-778-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2014-06-06 516-778-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2014-05-29 516-231-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN04 NY
2014-05-29 516-231-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN04 NY
2014-05-29 516-231-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN04 NY
2014-05-29 516-259-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN03 NY
2014-05-29 516-259-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN03 NY
2014-05-29 516-259-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN03 NY
2014-05-19 516-387-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN01 NY
2014-05-16 516-778-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2014-05-16 516-778-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2014-05-16 516-778-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2014-05-16 516-778-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2014-05-16 516-778-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2014-05-12 516-252-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2014-05-12 516-580-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 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.