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
2015-05-06 631-746-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 AMITYVILLE NY
2015-04-30 631-552-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AMITYVILLE NY
2015-04-30 631-652-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SMITHTOWN NY
2015-04-30 631-933-0XXX 0000–0999Assigned METROPCS, INC. 5562 AMITYVILLE NY
2015-04-23 631-213-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDLAND NY
2015-04-23 631-246-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E STONYBROOK NY
2015-04-23 631-253-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDLAND NY
2015-04-23 631-268-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SOUTHAMPTN NY
2015-04-23 631-268-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SOUTHAMPTN NY
2015-04-23 631-364-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E STONYBROOK NY
2015-04-07 631-636-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2015-04-07 631-636-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2015-04-02 631-900-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 W COMMACK NY
2015-03-12 631-815-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2015-02-25 631-228-9XXX 9000–9999Assigned IP HORIZON LLC 515J SHOREHAM NY
2015-02-25 631-239-0XXX 0000–0999Assigned IP HORIZON LLC 515J NORTHPORT NY
2015-02-25 631-337-3XXX 3000–3999Assigned IP HORIZON LLC 515J SAYVILLE NY
2015-02-25 631-518-8XXX 8000–8999Assigned IP HORIZON LLC 515J BAY SHORE NY
2015-02-25 631-568-0XXX 0000–0999Assigned IP HORIZON LLC 515J AMITYVILLE NY
2015-02-25 631-644-8XXX 8000–8999Assigned IP HORIZON LLC 515J RIVERHEAD NY
2015-02-25 631-674-3XXX 3000–3999Assigned IP HORIZON LLC 515J MIDLAND NY
2015-02-25 631-784-8XXX 8000–8999Assigned IP HORIZON LLC 515J CENTRAISLP NY
2015-02-25 631-840-2XXX 2000–2999Assigned IP HORIZON LLC 515J ISLIP NY
2015-02-09 631-993-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COMMACK NY
2015-02-06 631-644-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2015-02-06 631-644-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2015-02-02 631-372-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2015-02-02 631-372-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2015-02-02 631-372-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2015-01-26 631-636-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BRENTWOOD NY
2015-01-26 631-933-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2015-01-26 631-933-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2015-01-26 631-933-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2015-01-20 631-633-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BELLPORT NY
2015-01-20 631-633-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BELLPORT NY
2015-01-20 631-746-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2015-01-20 631-746-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2015-01-20 631-746-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2015-01-20 631-746-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2015-01-15 631-644-3XXX 3000–3999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2015-01-15 631-644-4XXX 4000–4999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2015-01-05 631-844-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2014-12-22 631-372-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2014-12-22 631-372-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2014-12-19 631-546-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C HUNTINGTON NY
2014-12-19 631-652-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C SMITHTOWN NY
2014-12-19 631-652-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C SMITHTOWN NY
2014-12-19 631-824-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C HUNTINGTON NY
2014-12-16 631-636-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2014-12-16 631-636-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD 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.