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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2010-12-07 631-460-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E KINGS PARK NY
2010-12-07 631-759-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E HUNTINGTON NY
2010-12-02 631-346-9XXX 9000–9999Assigned METROPCS, INC. 5562 SELDEN NY
2010-12-02 631-969-6XXX 6000–6999Assigned METROPCS, INC. 5562 BAY SHORE NY
2010-11-23 631-238-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MONTAUK PT NY
2010-11-23 631-315-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MATTITUCK NY
2010-11-23 631-333-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E GREENPORT NY
2010-11-23 631-596-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E QUOGUE NY
2010-11-23 631-898-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WESTHAMPTN NY
2010-11-02 631-339-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2010-11-02 631-353-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOUTHAMPTN NY
2010-10-27 631-394-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2010-10-27 631-394-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2010-10-27 631-533-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CENTRAISLP NY
2010-10-26 631-388-5XXX 5000–5999Assigned CSC VOICE, LLC 612K BRENTWOOD NY
2010-10-19 631-284-9XXX 9000–9999Assigned CSC VOICE, LLC 612K RIVERHEAD NY
2010-10-14 631-688-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FARMINGDL NY
2010-10-14 631-688-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FARMINGDL NY
2010-10-13 631-306-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E DEER PARK NY
2010-10-13 631-317-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PATCHOGUE NY
2010-10-13 631-505-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LINDENHST NY
2010-10-13 631-509-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PTJEFFERSN NY
2010-10-13 631-629-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HUNTINGTON NY
2010-10-13 631-729-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ATLANTIC NY
2010-10-13 631-762-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 STONYBROOK NY
2010-10-13 631-954-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BAY SHORE NY
2010-10-13 631-954-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E BAY SHORE NY
2010-10-08 631-339-8XXX 8000–8999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2010-10-08 631-505-9XXX 9000–9999Assigned METROPCS, INC. 5562 LINDENHST NY
2010-10-08 631-593-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J GREENPORT NY
2010-10-08 631-887-9XXX 9000–9999Assigned METROPCS, INC. 5562 HAMPTNBAYS NY
2010-10-04 631-336-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 BRENTWOOD NY
2010-10-01 631-317-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2010-10-01 631-317-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2010-09-22 631-371-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E STONYBROOK NY
2010-09-22 631-397-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AMITYVILLE NY
2010-09-22 631-533-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CENTRAISLP NY
2010-09-22 631-771-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E E HAMPTON NY
2010-09-15 631-615-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E RONKONKOMA NY
2010-09-13 631-358-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2010-09-10 631-210-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ISLIP NY
2010-09-10 631-213-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDLAND NY
2010-09-10 631-343-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E COMMACK NY
2010-09-10 631-460-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E KINGS PARK NY
2010-09-10 631-494-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E RIVERHEAD NY
2010-09-10 631-503-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CTRMORICHS NY
2010-09-10 631-504-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E YAPHANK NY
2010-09-10 631-522-0XXX 0000–0999Assigned METROPCS, INC. 5562 DEER PARK NY
2010-09-10 631-522-2XXX 2000–2999Assigned METROPCS, INC. 5562 DEER PARK NY
2010-09-10 631-522-3XXX 3000–3999Assigned METROPCS, INC. 5562 DEER PARK 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.