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
2011-06-08 631-619-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E RONKONKOMA NY
2011-06-07 631-729-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ATLANTIC NY
2011-06-07 631-855-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E DEER PARK NY
2011-06-07 631-904-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CENTRAISLP NY
2011-06-07 631-954-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BAY SHORE NY
2011-06-06 631-358-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2011-06-06 631-358-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2011-06-06 631-388-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-06-06 631-388-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-06-06 631-388-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-06-06 631-394-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 YAPHANK NY
2011-06-06 631-527-7XXX 7000–7999Assigned CSC VOICE, LLC 612K E HAMPTON NY
2011-06-01 631-339-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-06-01 631-353-3XXX 3000–3999Assigned CSC VOICE, LLC 612K SOUTHAMPTN NY
2011-05-25 631-229-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-05-25 631-693-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2011-05-18 631-358-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BABYLON NY
2011-05-11 631-339-6XXX 6000–6999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-05-11 631-394-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2011-05-11 631-925-7XXX 7000–7999Assigned METROPCS, INC. 5562 NORTHPORT NY
2011-05-10 631-346-5XXX 5000–5999Assigned METROPCS, INC. 5562 SELDEN NY
2011-05-10 631-629-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HUNTINGTON NY
2011-05-04 631-358-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2011-05-04 631-438-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PATCHOGUE NY
2011-05-03 631-595-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DEER PARK NY
2011-04-28 631-246-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E STONYBROOK NY
2011-04-28 631-319-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SAYVILLE NY
2011-04-28 631-352-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SMITHTOWN NY
2011-04-28 631-358-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BABYLON NY
2011-04-28 631-388-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BRENTWOOD NY
2011-04-28 631-388-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BRENTWOOD NY
2011-04-28 631-446-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ISLIP NY
2011-04-28 631-509-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PTJEFFERSN NY
2011-04-28 631-533-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CENTRAISLP NY
2011-04-28 631-716-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SELDEN NY
2011-04-28 631-760-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HUNTINGTON NY
2011-04-28 631-938-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PTJEFFERSN NY
2011-04-22 631-336-1XXX 1000–1999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-04-22 631-336-3XXX 3000–3999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-04-22 631-336-4XXX 4000–4999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-04-22 631-336-8XXX 8000–8999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-04-22 631-388-8XXX 8000–8999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-04-07 631-356-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-04-07 631-356-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2011-04-06 631-208-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2011-04-06 631-506-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2011-04-01 631-925-8XXX 8000–8999Assigned METROPCS, INC. 5562 NORTHPORT NY
2011-03-30 631-388-9XXX 9000–9999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-03-30 631-699-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SAYVILLE NY
2011-03-22 631-407-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SOUTHOLD 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.