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
2011-03-17 631-204-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SOUTHAMPTN NY
2011-03-17 631-213-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDLAND NY
2011-03-17 631-333-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E GREENPORT NY
2011-03-17 631-440-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FIREISLAND NY
2011-03-17 631-625-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ORIENT NY
2011-03-17 631-709-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WATER MILL NY
2011-03-17 631-771-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E E HAMPTON NY
2011-03-17 631-996-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E QUOGUE NY
2011-03-14 631-392-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 DEER PARK NY
2011-02-28 631-953-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E RIVERHEAD NY
2011-02-25 631-782-5XXX 5000–5999Assigned METROPCS, INC. 5562 DEER PARK NY
2011-02-25 631-782-7XXX 7000–7999Assigned METROPCS, INC. 5562 DEER PARK NY
2011-02-25 631-782-9XXX 9000–9999Assigned METROPCS, INC. 5562 DEER PARK NY
2011-02-25 631-855-2XXX 2000–2999Assigned METROPCS, INC. 5562 DEER PARK NY
2011-02-25 631-855-6XXX 6000–6999Assigned METROPCS, INC. 5562 DEER PARK NY
2011-02-23 631-405-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 RIVERHEAD NY
2011-02-22 631-300-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2011-02-22 631-468-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 RONKONKOMA NY
2011-02-22 631-505-6XXX 6000–6999Assigned METROPCS, INC. 5562 LINDENHST NY
2011-02-22 631-708-2XXX 2000–2999Assigned METROPCS, INC. 5562 BRENTWOOD NY
2011-02-17 631-323-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ORIENT NY
2011-02-17 631-440-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FIREISLAND NY
2011-02-17 631-488-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SOUTHAMPTN NY
2011-02-17 631-604-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E E HAMPTON NY
2011-02-17 631-709-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WATER MILL NY
2011-02-17 631-765-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SOUTHOLD NY
2011-02-09 631-346-7XXX 7000–7999Assigned METROPCS, INC. 5562 SELDEN NY
2011-02-07 631-358-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2011-02-07 631-358-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2011-01-26 631-336-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BRENTWOOD NY
2011-01-25 631-213-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDLAND NY
2011-01-25 631-343-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E COMMACK NY
2011-01-25 631-346-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SELDEN NY
2011-01-25 631-352-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SMITHTOWN NY
2011-01-25 631-714-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PATCHOGUE NY
2011-01-25 631-894-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BAY SHORE NY
2011-01-24 631-505-7XXX 7000–7999Assigned METROPCS, INC. 5562 LINDENHST NY
2011-01-19 631-317-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2011-01-19 631-317-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2011-01-14 631-595-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DEER PARK NY
2011-01-12 631-346-8XXX 8000–8999Assigned METROPCS, INC. 5562 SELDEN NY
2011-01-12 631-352-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SMITHTOWN NY
2011-01-12 631-394-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2011-01-12 631-394-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2011-01-12 631-954-8XXX 8000–8999Assigned METROPCS, INC. 5562 BAY SHORE NY
2011-01-11 631-505-8XXX 8000–8999Assigned METROPCS, INC. 5562 LINDENHST NY
2011-01-06 631-358-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2011-01-06 631-358-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BABYLON NY
2010-12-22 631-391-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FARMINGDL NY
2010-12-17 631-357-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 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.