NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2012-01-06 631-302-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E E FIRE IS NY
2012-01-04 631-237-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BRIDGEMPTN NY
2012-01-03 631-464-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-12-30 631-364-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J STONYBROOK NY
2011-12-29 631-416-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BRENTWOOD NY
2011-12-28 631-536-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E EASTPORT NY
2011-12-13 631-562-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PATCHOGUE NY
2011-12-05 631-416-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-12-05 631-416-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-12-05 631-438-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2011-12-02 631-416-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 BRENTWOOD NY
2011-12-01 631-498-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 COLDSPGHBR NY
2011-11-16 631-524-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-10-31 631-859-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ISLIP NY
2011-10-27 631-353-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHAMPTN NY
2011-10-27 631-935-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2011-10-11 631-417-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 BABYLON NY
2011-10-10 631-855-5XXX 5000–5999Assigned METROPCS, INC. 5562 DEER PARK NY
2011-10-10 631-855-8XXX 8000–8999Assigned METROPCS, INC. 5562 DEER PARK NY
2011-10-07 631-562-2XXX 2000–2999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 PATCHOGUE NY
2011-10-07 631-573-8XXX 8000–8999Assigned CSC VOICE, LLC 612K SAYVILLE NY
2011-10-03 631-330-0XXX 0000–0999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-2XXX 2000–2999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-10-03 631-330-9XXX 9000–9999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2011-09-27 631-256-5XXX 5000–5999Assigned CSC VOICE, LLC 612K SAYVILLE NY
2011-09-27 631-438-0XXX 0000–0999Assigned CSC VOICE, LLC 612K PATCHOGUE NY
2011-09-27 631-464-4XXX 4000–4999Assigned CSC VOICE, LLC 612K AMITYVILLE NY
2011-09-27 631-509-4XXX 4000–4999Assigned CSC VOICE, LLC 612K PTJEFFERSN NY
2011-09-27 631-620-3XXX 3000–3999Assigned CSC VOICE, LLC 612K BABYLON NY
2011-09-27 631-683-5XXX 5000–5999Assigned CSC VOICE, LLC 612K HUNTINGTON NY
2011-09-23 631-438-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2011-09-22 631-524-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-09-22 631-524-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-09-22 631-524-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-09-21 631-448-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2011-09-20 631-346-3XXX 3000–3999Assigned CSC VOICE, LLC 612K SELDEN NY
2011-09-20 631-651-5XXX 5000–5999Assigned CSC VOICE, LLC 612K NORTHPORT NY
2011-09-14 631-461-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2011-09-08 631-352-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SMITHTOWN NY
2011-09-07 631-760-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 HUNTINGTON NY
2011-08-30 631-659-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 COLDSPGHBR NY
2011-08-29 631-524-5XXX 5000–5999Assigned CSC VOICE, LLC 612K BRENTWOOD NY
2011-08-26 631-677-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J SAYVILLE NY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.