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
2017-07-24 703-817-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2017-07-21 703-712-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2017-07-21 703-712-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2017-07-10 703-737-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2017-07-10 703-814-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-07-10 703-814-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-07-10 703-826-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-07-10 703-826-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-07-03 703-826-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HERNDON VA
2017-06-27 703-817-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HERNDON VA
2017-06-22 703-420-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MANASSAS VA
2017-06-15 703-688-6XXX 6000–6999Assigned IP HORIZON LLC 515J LORTON VA
2017-06-15 703-826-0XXX 0000–0999Assigned IP HORIZON LLC 515J HERNDON VA
2017-06-15 703-952-6XXX 6000–6999Assigned IP HORIZON LLC 515J ENGLESIDE VA
2017-06-08 703-213-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-215-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-660-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-705-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-705-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-718-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-718-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-719-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-721-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-06-08 703-721-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2017-05-22 703-826-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2017-05-22 703-826-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2017-05-19 703-223-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN19 VA
2017-05-12 703-712-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2017-05-12 703-712-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2017-05-12 703-712-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2017-05-12 703-712-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2017-05-12 703-737-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2017-05-08 703-712-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN17 VA
2017-05-08 703-817-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HERNDON VA
2017-05-08 703-817-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HERNDON VA
2017-05-05 703-495-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LORTON VA
2017-04-26 703-223-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN19 VA
2017-04-24 703-397-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2017-04-24 703-397-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2017-04-24 703-423-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DULLES VA
2017-04-24 703-951-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRADDOCK VA
2017-04-18 703-423-0XXX 0000–0999Assigned TELNYX LLC 073H DULLES VA
2017-04-18 703-952-9XXX 9000–9999Assigned TELNYX LLC 073H ENGLESIDE VA
2017-04-13 703-814-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-03-31 703-827-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN17 VA
2017-03-09 703-263-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2017-03-08 703-263-8XXX 8000–8999Assigned TELNYX LLC 073H HERNDON VA
2017-03-03 703-397-8XXX 8000–8999Assigned TELNYX LLC 073H WSNGTNZN19 VA
2017-03-03 703-912-0XXX 0000–0999Assigned TELNYX LLC 073H WSNGTNZN17 VA
2017-02-21 703-223-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 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.