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
2018-08-10 631-272-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C CENTRAISLP NY
2018-07-30 631-310-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2018-07-26 631-469-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2018-07-26 631-469-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2018-07-26 631-469-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2018-07-17 631-557-3XXX 3000–3999Assigned CSC VOICE, LLC 612K AMAGANSETT NY
2018-07-17 631-886-3XXX 3000–3999Assigned CSC VOICE, LLC 612K WADING RIV NY
2018-07-12 631-436-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2018-07-12 631-809-0XXX 0000–0999Assigned METROPCS, INC. 5562 DEER PARK NY
2018-07-12 631-809-9XXX 9000–9999Assigned METROPCS, INC. 5562 DEER PARK NY
2018-07-09 631-508-7XXX 7000–7999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2018-07-09 631-508-9XXX 9000–9999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2018-07-06 631-303-4XXX 4000–4999Assigned METROPCS, INC. 5562 AMITYVILLE NY
2018-07-06 631-303-5XXX 5000–5999Assigned METROPCS, INC. 5562 AMITYVILLE NY
2018-06-14 631-313-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 ISLIP NY
2018-06-13 631-314-4XXX 4000–4999Assigned CSC VOICE, LLC 612K BABYLON NY
2018-06-12 631-479-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 HUNTINGTON NY
2018-06-12 631-508-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 RIVERHEAD NY
2018-06-07 631-479-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 HUNTINGTON NY
2018-06-07 631-710-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 RONKONKOMA NY
2018-05-10 631-203-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CENTRAISLP NY
2018-05-02 631-508-8XXX 8000–8999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2018-04-30 631-975-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CTRMORICHS NY
2018-04-25 631-469-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 BRENTWOOD NY
2018-04-23 631-997-6XXX 6000–6999Assigned METROPCS, INC. 5562 SELDEN NY
2018-04-16 631-309-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 AMITYVILLE NY
2018-04-13 631-310-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2018-04-11 631-832-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BAYPORT NY
2018-04-09 631-860-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C DEER PARK NY
2018-04-02 631-366-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SMITHTOWN NY
2018-03-23 631-303-1XXX 1000–1999Assigned METROPCS, INC. 5562 AMITYVILLE NY
2018-03-20 631-859-7XXX 7000–7999Assigned ONVOY, LLC- NY 384C ISLIP NY
2018-03-02 631-314-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C BABYLON NY
2018-03-02 631-997-7XXX 7000–7999Assigned ONVOY, LLC- NY 384C SELDEN NY
2018-02-28 631-303-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C AMITYVILLE NY
2018-02-28 631-739-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C RONKONKOMA NY
2018-02-26 631-203-4XXX 4000–4999Assigned CSC VOICE, LLC 612K CENTRAISLP NY
2018-02-26 631-203-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 CENTRAISLP NY
2018-02-16 631-996-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C QUOGUE NY
2018-02-15 631-378-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 SHOREHAM NY
2018-01-10 631-310-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 PATCHOGUE NY
2017-12-22 631-466-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2017-12-22 631-494-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2017-12-14 631-825-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C MONTAUK PT NY
2017-11-20 631-303-0XXX 0000–0999Assigned METROPCS, INC. 5562 AMITYVILLE NY
2017-11-17 631-705-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ATLANTIC NY
2017-11-16 631-381-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 RIVERHEAD NY
2017-11-16 631-515-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C SHELTER IS NY
2017-11-14 631-305-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2017-11-14 631-479-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON 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.