NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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
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
2006-06-13 516-833-5XXX 5000–5999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
2006-06-06 516-506-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2006-06-06 516-750-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2006-05-26 516-473-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 FARMINGDL NY
2006-05-26 516-558-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN07 NY
2006-05-26 516-882-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN09 NY
2006-05-24 516-472-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN01 NY
2006-05-24 516-472-7XXX 7000–7999Assigned CSC VOICE, LLC 612K NASSAUZN01 NY
2006-05-19 516-422-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 COLDSPGHBR NY
2006-05-18 516-368-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2006-05-15 516-708-9XXX 9000–9999Assigned CSC VOICE, LLC 612K NASSAUZN01 NY
2006-05-12 516-279-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2006-05-12 516-279-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2006-05-12 516-279-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2006-05-01 516-750-5XXX 5000–5999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
2006-05-01 516-750-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2006-04-25 516-474-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-25 516-474-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-25 516-474-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-25 516-513-1XXX 1000–1999Assigned CSC VOICE, LLC 612K NASSAUZN08 NY
2006-04-21 516-284-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN03 NY
2006-04-21 516-348-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN08 NY
2006-04-21 516-629-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN04 NY
2006-04-19 516-754-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-19 516-754-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-19 516-754-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-19 516-754-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-19 516-754-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2006-04-17 516-284-6XXX 6000–6999Assigned CSC VOICE, LLC 612K NASSAUZN03 NY
2006-04-17 516-284-7XXX 7000–7999Assigned CSC VOICE, LLC 612K NASSAUZN03 NY
2006-04-17 516-479-8XXX 8000–8999Assigned XCHANGE TELECOM CORP. - NY 325B NASSAUZN05 NY
2006-04-17 516-479-9XXX 9000–9999Assigned XCHANGE TELECOM CORP. - NY 325B NASSAUZN05 NY
2006-03-30 516-439-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN01 NY
2006-03-16 516-491-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2006-03-16 516-491-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2006-03-16 516-491-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2006-03-16 516-491-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2006-03-15 516-385-3XXX 3000–3999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
2006-03-15 516-874-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2006-03-13 516-281-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2006-03-13 516-281-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2006-03-13 516-281-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2006-03-13 516-282-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2006-03-13 516-282-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2006-03-13 516-282-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2006-03-07 516-439-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN01 NY
2006-03-02 516-714-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN07 NY
2006-03-02 516-986-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 FARMINGDL NY
2006-02-08 516-320-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2006-02-08 516-320-1XXX 1000–1999Assigned 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.