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
2020-07-16 571-946-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2020-07-16 571-946-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2020-07-13 571-544-4XXX 4000–4999Assigned FRACTEL, LLC 965H WSNGTNZN19 VA
2020-07-13 571-677-7XXX 7000–7999Assigned FRACTEL, LLC 965H DALE CITY VA
2020-07-13 571-755-5XXX 5000–5999Assigned FRACTEL, LLC 965H HAYMARKET VA
2020-07-13 571-786-7XXX 7000–7999Assigned FRACTEL, LLC 965H HERNDON VA
2020-07-13 571-899-9XXX 9000–9999Assigned FRACTEL, LLC 965H WSNGTNZN17 VA
2020-07-13 571-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H MANASSAS VA
2020-07-13 571-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H WSNGTNZN08 VA
2020-07-09 571-430-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 HERNDON VA
2020-07-09 571-495-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2020-07-01 571-493-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2020-06-25 571-450-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LORTON VA
2020-06-25 571-450-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H LORTON VA
2020-06-25 571-450-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H LORTON VA
2020-06-11 571-701-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2020-06-11 571-701-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2020-06-11 571-901-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2020-06-11 571-901-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2020-06-10 571-467-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2020-06-10 571-467-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2020-06-10 571-467-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2020-06-05 571-453-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-06-05 571-453-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-06-05 571-460-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2020-06-05 571-460-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2020-06-05 571-460-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2020-06-05 571-475-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2020-06-05 571-475-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2020-06-05 571-475-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2020-06-05 571-600-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E DULLESMTRO VA
2020-06-05 571-600-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E DULLESMTRO VA
2020-06-05 571-749-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-06-05 571-749-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2020-06-05 571-931-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2020-06-05 571-931-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2020-06-02 571-454-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2020-06-02 571-454-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2020-06-02 571-454-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2020-06-01 571-475-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G BRADDOCK VA
2020-06-01 571-496-7XXX 7000–7999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LORTONMTRO VA
2020-05-19 571-517-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E DULLES VA
2020-05-19 571-517-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E DULLES VA
2020-05-15 571-475-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D BRADDOCK VA
2020-05-15 571-475-7XXX 7000–7999Assigned VONAGE AMERICA LLC 197D BRADDOCK VA
2020-05-13 571-601-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-05-13 571-601-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-05-13 571-601-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-05-13 571-601-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-05-12 571-415-8XXX 8000–8999Assigned VONAGE AMERICA LLC 197D HAYMARKET 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.