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
2005-03-16 516-858-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN01 NY
2005-03-16 516-858-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN01 NY
2005-03-15 516-587-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-587-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-587-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-587-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-587-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-589-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-589-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-589-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-589-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-589-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-15 516-792-1XXX 1000–1999Assigned CSC VOICE, LLC 612K NASSAUZN03 NY
2005-03-15 516-792-3XXX 3000–3999Assigned CSC VOICE, LLC 612K NASSAUZN03 NY
2005-03-15 516-830-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN02 NY
2005-03-15 516-830-7XXX 7000–7999Assigned METROPCS, INC. 5562 NASSAUZN02 NY
2005-03-15 516-837-0XXX 0000–0999Assigned CSC VOICE, LLC 612K NASSAUZN03 NY
2005-03-10 516-833-6XXX 6000–6999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
2005-03-10 516-833-7XXX 7000–7999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
2005-03-10 516-833-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2005-03-04 516-502-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-04 516-673-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2005-03-01 516-208-3XXX 3000–3999Assigned CSC VOICE, LLC 612K NASSAUZN06 NY
2005-03-01 516-208-7XXX 7000–7999Assigned CSC VOICE, LLC 612K NASSAUZN06 NY
2005-03-01 516-208-8XXX 8000–8999Assigned CSC VOICE, LLC 612K NASSAUZN06 NY
2005-03-01 516-502-6XXX 6000–6999Assigned CSC VOICE, LLC 612K NASSAUZN02 NY
2005-03-01 516-673-4XXX 4000–4999Assigned CSC VOICE, LLC 612K NASSAUZN02 NY
2005-02-18 516-203-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2005-02-18 516-320-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2005-02-15 516-417-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2005-02-15 516-640-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2005-02-15 516-640-4XXX 4000–4999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
2005-02-15 516-640-5XXX 5000–5999Assigned CSC VOICE, LLC 612K NASSAUZN05 NY
2005-02-14 516-809-5XXX 5000–5999Assigned CSC VOICE, LLC 612K NASSAUZN09 NY
2005-02-14 516-809-6XXX 6000–6999Assigned CSC VOICE, LLC 612K NASSAUZN09 NY
2005-02-14 516-809-7XXX 7000–7999Assigned CSC VOICE, LLC 612K NASSAUZN09 NY
2005-02-09 516-592-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-02-09 516-592-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-02-09 516-592-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-02-09 516-592-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-02-07 516-209-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN02 NY
2005-02-07 516-806-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN08 NY
2005-02-04 516-557-2XXX 2000–2999Assigned CSC VOICE, LLC 612K NASSAUZN09 NY
2005-02-04 516-809-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN09 NY
2005-01-31 516-208-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J NASSAUZN06 NY
2005-01-31 516-632-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J NASSAUZN06 NY
2005-01-31 516-670-4XXX 4000–4999Assigned METROPCS, INC. 5562 NASSAUZN06 NY
2005-01-26 516-209-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN02 NY
2005-01-26 516-686-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN04 NY
2005-01-19 516-507-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J 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.