NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

41 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 571
ONVOY, LLC - VA 10
BANDWIDTH.COM CLEC, LLC - VA 9
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 7
NEW CINGULAR WIRELESS PCS, LLC - DC 6
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6
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
2020-11-05 571-786-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E HERNDON VA
2020-11-05 571-786-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E HERNDON VA
2020-11-05 571-786-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E HERNDON VA
2020-11-05 571-786-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E HERNDON VA
2020-11-05 571-831-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2020-11-05 571-899-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-11-05 571-899-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-11-05 571-899-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-11-05 571-899-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-11-05 571-899-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-11-05 571-977-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2020-11-05 571-977-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2020-11-05 571-977-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2020-11-05 571-977-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2020-11-05 571-977-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2020-11-05 571-977-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2020-10-28 571-479-1XXX 1000–1999Assigned NUSO, LLC 478J LEESBURG VA
2020-10-22 571-470-2XXX 2000–2999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN19 VA
2020-10-21 571-456-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G TRIANGLE VA
2020-10-21 571-755-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HAYMARKET VA
2020-10-21 571-901-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G ENGLESIDE VA
2020-10-19 571-556-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2020-10-19 571-556-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2020-10-19 571-556-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2020-10-12 571-487-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2020-10-12 571-487-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2020-10-12 571-600-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E DULLESMTRO VA
2020-10-12 571-601-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-10-12 571-601-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-10-12 571-701-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2020-10-12 571-701-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2020-10-12 571-877-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2020-10-12 571-877-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2020-10-08 571-517-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E DULLES VA
2020-10-08 571-517-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E DULLES VA
2020-10-07 571-462-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2020-10-07 571-462-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2020-10-05 571-677-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DALE CITY VA
2020-10-02 571-397-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2020-10-02 571-463-4XXX 4000–4999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G ARCOLA VA
2020-10-02 571-475-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G BRADDOCK VA
2020-09-30 571-901-4XXX 4000–4999Assigned METROPCS, INC. 5562 ENGLESIDE VA
2020-09-25 571-456-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2020-09-25 571-677-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DALE CITY VA
2020-09-25 571-677-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DALE CITY VA
2020-09-25 571-677-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DALE CITY VA
2020-09-24 571-498-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2020-09-16 571-416-1XXX 1000–1999Assigned IP HORIZON LLC 515J LEESBURG VA
2020-09-08 571-473-1XXX 1000–1999Assigned NUSO, LLC 478J WSNGTNZN08 VA
2020-09-03 571-520-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E HERNDON 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.