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
2005-06-20 516-299-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN04 NY
2005-06-20 516-336-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN08 NY
2005-06-20 516-342-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN08 NY
2005-06-20 516-342-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN08 NY
2005-06-20 516-342-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN08 NY
2005-06-20 516-714-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN07 NY
2005-06-20 516-762-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN07 NY
2005-06-20 516-762-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN07 NY
2005-06-20 516-806-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN08 NY
2005-06-17 516-342-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN08 NY
2005-06-17 516-882-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN09 NY
2005-06-17 516-882-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN09 NY
2005-06-16 516-986-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 FARMINGDL NY
2005-06-10 516-232-0XXX 0000–0999Assigned METROPCS, INC. 5562 NASSAUZN02 NY
2005-06-10 516-232-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN02 NY
2005-06-10 516-776-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-06-10 516-776-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-06-10 516-776-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-06-10 516-776-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-06-10 516-776-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-06-08 516-740-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NASSAUZN04 NY
2005-06-08 516-740-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J NASSAUZN04 NY
2005-06-08 516-740-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J NASSAUZN04 NY
2005-05-13 516-467-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN01 NY
2005-05-04 516-537-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN03 NY
2005-05-03 516-204-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN03 NY
2005-05-03 516-284-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN03 NY
2005-05-03 516-507-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-05-03 516-507-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-05-03 516-507-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-05-03 516-507-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-05-03 516-507-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-05-03 516-507-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN05 NY
2005-05-03 516-821-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN03 NY
2005-04-29 516-858-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN01 NY
2005-04-20 516-665-8XXX 8000–8999Assigned CSC VOICE, LLC 612K NASSAUZN06 NY
2005-04-20 516-665-9XXX 9000–9999Assigned CSC VOICE, LLC 612K NASSAUZN06 NY
2005-04-11 516-586-3XXX 3000–3999Assigned CSC VOICE, LLC 612K FARMINGDL NY
2005-04-08 516-592-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-08 516-660-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-08 516-660-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-08 516-660-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-08 516-732-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-08 516-732-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-08 516-732-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-08 516-732-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY
2005-04-07 516-408-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J NASSAUZN05 NY
2005-04-06 516-874-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2005-04-06 516-874-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN05 NY
2005-03-16 516-858-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NASSAUZN01 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.