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
2017-03-29 631-640-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2017-03-29 631-640-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2017-03-29 631-640-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2017-03-29 631-640-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2017-03-29 631-640-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2017-03-27 631-381-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 RIVERHEAD NY
2017-01-31 631-214-7XXX 7000–7999Assigned METROPCS, INC. 5562 DEER PARK NY
2017-01-25 631-310-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2017-01-20 631-305-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2017-01-09 631-214-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 DEER PARK NY
2017-01-09 631-829-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2017-01-09 631-829-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-12-16 631-214-4XXX 4000–4999Assigned METROPCS, INC. 5562 DEER PARK NY
2016-12-16 631-214-5XXX 5000–5999Assigned METROPCS, INC. 5562 DEER PARK NY
2016-12-06 631-301-1XXX 1000–1999Assigned TELNYX LLC 073H FARMINGDL NY
2016-11-23 631-210-8XXX 8000–8999Assigned IP HORIZON LLC 515J ISLIP NY
2016-11-23 631-284-1XXX 1000–1999Assigned IP HORIZON LLC 515J RIVERHEAD NY
2016-11-10 631-202-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 RONKONKOMA NY
2016-11-10 631-530-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-11-10 631-530-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-11-10 631-530-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-11-10 631-530-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-11-10 631-829-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-11-10 631-829-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-10-21 631-304-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2016-10-21 631-372-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2016-10-13 631-526-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2016-10-13 631-530-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-10-13 631-530-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-10-13 631-530-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-10-13 631-530-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-10-13 631-530-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2016-10-13 631-620-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2016-10-13 631-620-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2016-10-13 631-633-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BELLPORT NY
2016-10-13 631-635-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2016-09-27 631-381-8XXX 8000–8999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2016-09-23 631-861-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NY 7126 FARMINGDL NY
2016-09-23 631-977-3XXX 3000–3999Assigned TC SYSTEMS, INC. - NY 7140 PATCHOGUE NY
2016-09-23 631-977-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 PATCHOGUE NY
2016-09-23 631-977-5XXX 5000–5999Assigned TC SYSTEMS, INC. - NY 7140 PATCHOGUE NY
2016-09-23 631-977-6XXX 6000–6999Assigned TC SYSTEMS, INC. - NY 7140 PATCHOGUE NY
2016-09-20 631-215-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2016-09-20 631-215-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2016-09-20 631-215-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2016-09-20 631-215-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2016-09-20 631-304-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2016-09-20 631-381-3XXX 3000–3999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2016-09-15 631-562-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2016-09-15 631-977-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE 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.