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
2008-02-07 631-503-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E CTRMORICHS NY
2008-02-07 631-604-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E E HAMPTON NY
2008-02-07 631-701-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - NY 282E EASTPORT NY
2008-02-07 631-731-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E AMAGANSETT NY
2008-02-07 631-823-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E BAYPORT NY
2008-02-07 631-824-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E HUNTINGTON NY
2008-02-07 631-841-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E AMITYVILLE NY
2008-02-07 631-866-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E BELLPORT NY
2008-02-07 631-887-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E HAMPTNBAYS NY
2008-02-07 631-991-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - NY 282E LINDENHST NY
2008-02-06 631-787-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2008-02-04 631-328-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BAY SHORE NY
2008-01-15 631-377-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 SOUTHAMPTN NY
2008-01-04 631-245-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-478-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-478-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-482-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2008-01-04 631-559-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-559-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-972-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-972-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-972-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2008-01-04 631-972-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-12-14 631-520-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2007-12-06 631-559-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-12-06 631-559-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-12-06 631-559-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-12-06 631-559-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-12-06 631-566-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-12-06 631-566-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-12-06 631-566-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-12-06 631-566-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-12-04 631-316-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-12-04 631-316-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-11-30 631-482-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2007-11-07 631-392-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DEER PARK NY
2007-10-31 631-629-4XXX 4000–4999Assigned CSC VOICE, LLC 612K HUNTINGTON NY
2007-10-22 631-245-6XXX 6000–6999Assigned CSC VOICE, LLC 612K BRENTWOOD NY
2007-10-22 631-292-2XXX 2000–2999Assigned CSC VOICE, LLC 612K KINGS PARK NY
2007-10-22 631-328-1XXX 1000–1999Assigned CSC VOICE, LLC 612K BAY SHORE NY
2007-10-22 631-419-6XXX 6000–6999Assigned CSC VOICE, LLC 612K BAYPORT NY
2007-10-22 631-569-4XXX 4000–4999Assigned CSC VOICE, LLC 612K PATCHOGUE NY
2007-10-22 631-683-4XXX 4000–4999Assigned CSC VOICE, LLC 612K HUNTINGTON NY
2007-10-22 631-772-1XXX 1000–1999Assigned CSC VOICE, LLC 612K ATLANTIC NY
2007-10-15 631-965-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 RIVERHEAD NY
2007-10-11 631-740-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-10-11 631-740-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-10-10 631-319-6XXX 6000–6999Assigned CSC VOICE, LLC 612K SAYVILLE NY
2007-10-10 631-403-4XXX 4000–4999Assigned CSC VOICE, LLC 612K PTJEFFERSN NY
2007-10-10 631-446-1XXX 1000–1999Assigned CSC VOICE, LLC 612K ISLIP 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.