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
2011-08-23 631-302-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J E FIRE IS NY
2011-08-15 631-352-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SMITHTOWN NY
2011-08-11 631-468-8XXX 8000–8999Assigned CSC VOICE, LLC 612K RONKONKOMA NY
2011-08-08 631-353-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHAMPTN NY
2011-08-08 631-394-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2011-08-08 631-394-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2011-08-08 631-394-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2011-08-08 631-494-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2011-08-08 631-524-6XXX 6000–6999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-08-08 631-524-7XXX 7000–7999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-08-08 631-524-8XXX 8000–8999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-08-02 631-517-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BABYLON NY
2011-08-02 631-760-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HUNTINGTON NY
2011-07-26 631-438-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PATCHOGUE NY
2011-07-26 631-572-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2011-07-21 631-683-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HUNTINGTON NY
2011-07-21 631-792-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BABYLON NY
2011-07-19 631-524-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-07-14 631-346-1XXX 1000–1999Assigned METROPCS, INC. 5562 SELDEN NY
2011-07-14 631-346-2XXX 2000–2999Assigned METROPCS, INC. 5562 SELDEN NY
2011-07-14 631-352-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SMITHTOWN NY
2011-07-14 631-352-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SMITHTOWN NY
2011-07-13 631-282-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E YAPHANK NY
2011-07-13 631-485-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDLAND NY
2011-07-13 631-485-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDLAND NY
2011-07-12 631-416-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-07-12 631-464-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-07-12 631-464-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-07-11 631-629-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2011-07-08 631-438-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2011-07-08 631-438-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2011-07-07 631-388-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-07-07 631-388-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-07-07 631-405-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2011-07-07 631-405-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2011-07-07 631-405-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2011-07-01 631-333-2XXX 2000–2999Assigned CSC VOICE, LLC 612K GREENPORT NY
2011-06-30 631-353-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHAMPTN NY
2011-06-23 631-620-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 BABYLON NY
2011-06-20 631-464-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-06-20 631-464-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-06-20 631-464-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-06-20 631-629-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E HUNTINGTON NY
2011-06-10 631-464-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AMITYVILLE NY
2011-06-08 631-228-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SHOREHAM NY
2011-06-08 631-412-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LINDENHST NY
2011-06-08 631-438-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J PATCHOGUE NY
2011-06-08 631-438-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J PATCHOGUE NY
2011-06-08 631-493-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E W COMMACK NY
2011-06-08 631-606-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NORTHPORT 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.