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
2007-06-25 631-759-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2007-06-25 631-759-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2007-06-22 631-509-0XXX 0000–0999Assigned CSC VOICE, LLC 612K PTJEFFERSN NY
2007-06-22 631-509-1XXX 1000–1999Assigned CSC VOICE, LLC 612K PTJEFFERSN NY
2007-06-22 631-566-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 RIVERHEAD NY
2007-06-20 631-668-8XXX 8000–8999Assigned CSC VOICE, LLC 612K MONTAUK PT NY
2007-06-18 631-328-4XXX 4000–4999Assigned CSC VOICE, LLC 612K BAY SHORE NY
2007-06-18 631-328-5XXX 5000–5999Assigned CSC VOICE, LLC 612K BAY SHORE NY
2007-06-12 631-849-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 SHOREHAM NY
2007-06-11 631-446-4XXX 4000–4999Assigned CSC VOICE, LLC 612K ISLIP NY
2007-06-11 631-963-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2007-06-11 631-963-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2007-06-07 631-655-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-06-07 631-655-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-06-07 631-655-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-06-05 631-239-1XXX 1000–1999Assigned CSC VOICE, LLC 612K NORTHPORT NY
2007-06-04 631-923-0XXX 0000–0999Assigned CSC VOICE, LLC 612K HUNTINGTON NY
2007-06-04 631-923-1XXX 1000–1999Assigned CSC VOICE, LLC 612K HUNTINGTON NY
2007-06-04 631-923-2XXX 2000–2999Assigned CSC VOICE, LLC 612K HUNTINGTON NY
2007-05-24 631-704-0XXX 0000–0999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2007-05-24 631-704-1XXX 1000–1999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2007-05-17 631-520-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2007-05-17 631-604-2XXX 2000–2999Assigned CSC VOICE, LLC 612K E HAMPTON NY
2007-05-17 631-833-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 RIVERHEAD NY
2007-05-11 631-245-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2007-05-11 631-676-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 RONKONKOMA NY
2007-05-11 631-865-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-865-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-865-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-865-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-865-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-865-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-05-11 631-932-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E DEER PARK NY
2007-04-30 631-578-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2007-04-30 631-578-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2007-04-16 631-377-4XXX 4000–4999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E SOUTHAMPTN NY
2007-04-16 631-763-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E COLDSPGHBR NY
2007-04-16 631-961-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2007-04-02 631-482-8XXX 8000–8999Assigned CSC VOICE, LLC 612K BABYLON NY
2007-04-02 631-482-9XXX 9000–9999Assigned CSC VOICE, LLC 612K BABYLON NY
2007-03-29 631-704-5XXX 5000–5999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2007-03-27 631-377-3XXX 3000–3999Assigned CSC VOICE, LLC 612K SOUTHAMPTN 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.