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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2004-09-16 631-963-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2004-09-16 631-963-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2004-09-16 631-963-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2004-09-09 631-960-6XXX 6000–6999Assigned METROPCS, INC. 5562 ISLIP NY
2004-09-07 631-365-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-09-07 631-741-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-09-07 631-741-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-09-07 631-741-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-08-25 631-960-8XXX 8000–8999Assigned METROPCS, INC. 5562 ISLIP NY
2004-08-24 631-687-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 PATCHOGUE NY
2004-08-23 631-676-9XXX 9000–9999Assigned CSC VOICE, LLC 612K RONKONKOMA NY
2004-08-17 631-709-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WATER MILL NY
2004-08-17 631-925-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J NORTHPORT NY
2004-08-17 631-995-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J YAPHANK NY
2004-08-16 631-742-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2004-08-16 631-742-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON NY
2004-08-16 631-787-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CENTRAISLP NY
2004-08-16 631-905-2XXX 2000–2999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2004-08-16 631-905-3XXX 3000–3999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2004-08-10 631-237-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BRIDGEMPTN NY
2004-08-10 631-238-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 MONTAUK PT NY
2004-08-10 631-503-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CTRMORICHS NY
2004-08-10 631-653-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 QUOGUE NY
2004-08-10 631-706-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 STONYBROOK NY
2004-08-10 631-779-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 JAMESPORT NY
2004-08-10 631-850-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 W COMMACK NY
2004-08-10 631-887-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 HAMPTNBAYS NY
2004-08-10 631-898-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WESTHAMPTN NY
2004-08-10 631-907-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 E HAMPTON NY
2004-08-10 631-910-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WADING RIV NY
2004-08-10 631-995-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 YAPHANK NY
2004-08-09 631-870-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2004-08-09 631-870-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CENTRAISLP NY
2004-07-30 631-291-9XXX 9000–9999Assigned CSC VOICE, LLC 612K BRENTWOOD NY
2004-07-26 631-739-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 RONKONKOMA NY
2004-07-14 631-291-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-07-14 631-291-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-07-14 631-291-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-07-14 631-291-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-06-28 631-357-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2004-06-24 631-485-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 MIDLAND NY
2004-06-16 631-387-3XXX 3000–3999Assigned METROPCS, INC. 5562 COMMACK NY
2004-06-16 631-492-7XXX 7000–7999Assigned METROPCS, INC. 5562 DEER PARK NY
2004-06-14 631-291-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-06-14 631-338-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2004-06-10 631-891-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2004-06-10 631-891-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2004-06-10 631-891-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2004-06-01 631-295-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2004-05-26 631-891-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J 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.