NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 703
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 1
BANDWIDTH.COM CLEC, LLC - VA 1
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
2011-08-31 703-436-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 LORTON VA
2011-08-22 703-982-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LORTON VA
2011-08-18 703-949-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2011-08-05 703-570-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DULLESMTRO VA
2011-08-01 703-982-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LORTON VA
2011-07-19 703-672-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LORTON VA
2011-07-12 703-949-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2011-07-11 703-291-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 TRIANGLE VA
2011-06-08 703-688-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LORTON VA
2011-06-08 703-982-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LORTON VA
2011-06-07 703-949-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HERNDON VA
2011-06-01 703-996-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DULLES VA
2011-05-25 703-949-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2011-05-25 703-949-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2011-05-18 703-594-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F NOKESVILLE VA
2011-05-18 703-594-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F NOKESVILLE VA
2011-05-16 703-688-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LORTON VA
2011-05-16 703-688-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LORTON VA
2011-04-20 703-831-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2011-04-20 703-951-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2011-04-20 703-951-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2011-04-20 703-988-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2011-04-20 703-988-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2011-03-15 703-468-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E HAYMARKET VA
2011-03-15 703-468-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E HAYMARKET VA
2011-03-15 703-468-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E HAYMARKET VA
2011-03-15 703-596-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E NOKESVILLE VA
2011-03-15 703-596-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E NOKESVILLE VA
2011-03-15 703-596-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 NOKESVILLE VA
2011-03-15 703-743-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E HAYMARKET VA
2011-03-09 703-552-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DULLESMTRO VA
2011-03-09 703-665-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DULLES VA
2011-03-03 703-649-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TRIANGLE VA
2011-03-03 703-649-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TRIANGLE VA
2011-03-03 703-662-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DULLES VA
2011-02-28 703-982-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LORTON VA
2011-02-28 703-982-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LORTON VA
2011-02-11 703-466-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HERNDON VA
2011-01-31 703-776-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2011-01-21 703-662-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DULLES VA
2011-01-21 703-672-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LORTON VA
2011-01-17 703-949-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 HERNDON VA
2011-01-17 703-949-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 HERNDON VA
2010-11-05 703-667-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2010-11-05 703-988-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRADDOCK VA
2010-10-28 703-672-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J LORTON VA
2010-10-22 703-539-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN19 VA
2010-10-18 703-567-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN08 VA
2010-10-14 703-982-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LORTON VA
2010-10-14 703-982-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LORTON VA

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.