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 631
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
2002-12-26 631-240-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SMITHTOWN NY
2002-12-26 631-576-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PATCHOGUE NY
2002-12-26 631-721-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SELDEN NY
2002-12-26 631-791-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PTJEFFERSN NY
2002-12-26 631-865-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 DEER PARK NY
2002-12-26 631-956-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 LINDENHST NY
2002-12-26 631-983-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BABYLON NY
2002-12-02 631-235-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-12-02 631-235-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-12-02 631-235-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-12-02 631-235-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-12-02 631-235-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-25 631-256-6XXX 6000–6999Assigned CSC VOICE, LLC 612K SAYVILLE NY
2002-11-25 631-642-7XXX 7000–7999Assigned CSC VOICE, LLC 612K PTJEFFERSN NY
2002-11-25 631-726-0XXX 0000–0999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 WATER MILL NY
2002-11-25 631-729-3XXX 3000–3999Assigned CSC VOICE, LLC 612K ATLANTIC NY
2002-11-15 631-297-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 CENTRAISLP NY
2002-11-11 631-357-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BRENTWOOD NY
2002-11-11 631-662-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2002-11-11 631-662-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2002-11-11 631-662-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2002-11-11 631-662-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2002-11-11 631-662-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2002-11-11 631-662-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2002-11-11 631-662-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2002-11-04 631-235-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-04 631-235-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-04 631-235-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-04 631-235-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-04 631-235-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-04 631-264-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 AMITYVILLE NY
2002-11-03 631-255-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-255-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-11-03 631-258-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2002-11-03 631-258-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD 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.