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
2017-02-21 703-223-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2017-02-21 703-826-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2017-02-17 703-420-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 MANASSAS VA
2017-02-15 703-423-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-15 703-423-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-15 703-423-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-15 703-423-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-15 703-423-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-15 703-423-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-15 703-423-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-15 703-423-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2017-02-02 703-488-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-02-02 703-814-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-02-02 703-814-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2017-02-01 703-705-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN08 VA
2017-02-01 703-718-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN08 VA
2017-01-20 703-866-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN17 VA
2017-01-13 703-826-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HERNDON VA
2017-01-06 703-420-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2016-11-21 703-721-5XXX 5000–5999Assigned IP HORIZON LLC 515J WSNGTNZN08 VA
2016-11-21 703-921-4XXX 4000–4999Assigned IP HORIZON LLC 515J WSNGTNZN08 VA
2016-11-18 703-443-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LEESBURG VA
2016-11-15 703-902-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2016-11-09 703-420-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2016-11-08 703-420-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MANASSAS VA
2016-11-03 703-223-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2016-11-03 703-223-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2016-10-31 703-721-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2016-10-20 703-972-6XXX 6000–6999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2016-09-14 703-721-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN08 VA
2016-09-09 703-420-1XXX 1000–1999Assigned NUSO, LLC 551G MANASSAS VA
2016-09-07 703-687-0XXX 0000–0999Assigned NUSO, LLC 551G LEESBURG VA
2016-09-07 703-688-8XXX 8000–8999Assigned NUSO, LLC 551G LORTON VA
2016-09-07 703-783-9XXX 9000–9999Assigned NUSO, LLC 551G ENGLESIDE VA
2016-08-19 703-443-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2016-08-18 703-794-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F INDENDNTHL VA
2016-08-02 703-782-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G ENGLESIDE VA
2016-07-12 703-382-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2016-07-12 703-382-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2016-07-06 703-454-6XXX 6000–6999Assigned METROPCS, INC. 5562 ENGLESIDE VA
2016-06-29 703-454-1XXX 1000–1999Assigned METROPCS, INC. 5562 ENGLESIDE VA
2016-05-17 703-546-6XXX 6000–6999Assigned METROPCS, INC. 5562 ENGLESIDE VA
2016-03-16 703-782-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2016-02-23 703-454-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2016-02-23 703-454-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2016-02-18 703-372-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2015-12-30 703-429-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HERNDON VA
2015-12-09 703-688-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 LORTON VA
2015-10-01 703-486-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2015-09-10 703-228-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 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.