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
2007-08-27 631-316-6XXX 6000–6999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2007-08-27 631-316-7XXX 7000–7999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2007-08-27 631-316-9XXX 9000–9999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2007-08-27 631-517-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BABYLON NY
2007-08-27 631-536-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E EASTPORT NY
2007-08-27 631-780-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SMITHTOWN NY
2007-08-27 631-863-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 SMITHTOWN NY
2007-08-13 631-482-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2007-08-13 631-532-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AMITYVILLE NY
2007-08-10 631-569-2XXX 2000–2999Assigned CSC VOICE, LLC 612K PATCHOGUE NY
2007-08-10 631-578-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2007-08-10 631-578-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2007-08-10 631-578-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2007-08-10 631-578-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2007-08-10 631-657-6XXX 6000–6999Assigned CSC VOICE, LLC 612K ATLANTIC NY
2007-08-10 631-867-6XXX 6000–6999Assigned METROPCS, INC. 5562 LINDENHST NY
2007-08-10 631-867-8XXX 8000–8999Assigned METROPCS, INC. 5562 LINDENHST NY
2007-08-08 631-603-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-08-08 631-603-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2007-08-07 631-316-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-08-07 631-316-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2007-07-31 631-604-6XXX 6000–6999Assigned CSC VOICE, LLC 612K E HAMPTON NY
2007-07-31 631-657-3XXX 3000–3999Assigned CSC VOICE, LLC 612K ATLANTIC NY
2007-07-24 631-238-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 MONTAUK PT NY
2007-07-24 631-267-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 AMAGANSETT NY
2007-07-24 631-315-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 MATTITUCK NY
2007-07-24 631-593-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 GREENPORT NY
2007-07-24 631-594-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 HAMPTNBAYS NY
2007-07-24 631-596-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 QUOGUE NY
2007-07-24 631-602-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 SHELTER IS NY
2007-07-24 631-613-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 BRIDGEMPTN NY
2007-07-24 631-616-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 PECONIC NY
2007-07-24 631-625-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C ORIENT NY
2007-07-24 631-709-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WATER MILL NY
2007-07-24 631-722-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 JAMESPORT NY
2007-07-24 631-898-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WESTHAMPTN NY
2007-07-24 631-912-5XXX 5000–5999Assigned METROPCS, INC. 5562 NORTHPORT NY
2007-07-24 631-912-6XXX 6000–6999Assigned METROPCS, INC. 5562 NORTHPORT NY
2007-07-19 631-619-6XXX 6000–6999Assigned CSC VOICE, LLC 612K RONKONKOMA NY
2007-07-18 631-315-5XXX 5000–5999Assigned CSC VOICE, LLC 612K MATTITUCK NY
2007-07-18 631-651-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 NORTHPORT NY
2007-07-16 631-944-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J HUNTINGTON NY
2007-07-11 631-413-8XXX 8000–8999Assigned METROPCS, INC. 5562 SELDEN NY
2007-07-11 631-413-9XXX 9000–9999Assigned METROPCS, INC. 5562 SELDEN NY
2007-07-11 631-512-5XXX 5000–5999Assigned METROPCS, INC. 5562 SELDEN NY
2007-07-03 631-569-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 PATCHOGUE NY
2007-07-03 631-780-5XXX 5000–5999Assigned CSC VOICE, LLC 612K SMITHTOWN NY
2007-06-27 631-403-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 PTJEFFERSN NY
2007-06-27 631-729-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 ATLANTIC NY
2007-06-27 631-901-1XXX 1000–1999Assigned CSC VOICE, LLC 612K BRENTWOOD 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.