NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

41 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2020-04-09 571-460-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2020-04-09 571-460-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2020-04-09 571-460-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2020-04-07 571-438-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2020-04-07 571-842-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2020-04-07 571-842-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2020-04-07 571-842-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2020-04-02 571-410-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-04-02 571-410-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-04-02 571-410-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2020-04-02 571-456-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRIANGLE VA
2020-04-02 571-456-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRIANGLE VA
2020-04-02 571-456-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRIANGLE VA
2020-04-02 571-456-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRIANGLE VA
2020-04-02 571-559-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2020-04-01 571-462-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2020-03-31 571-410-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LEESBURG VA
2020-03-31 571-842-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2020-03-10 571-456-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRIANGLE VA
2020-03-05 571-430-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HERNDON VA
2020-03-05 571-430-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HERNDON VA
2020-03-03 571-360-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2020-03-03 571-390-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2020-03-03 571-415-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E HAYMARKET VA
2020-03-03 571-415-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E HAYMARKET VA
2020-03-03 571-450-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E LORTON VA
2020-03-03 571-450-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E LORTON VA
2020-03-03 571-487-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2020-03-03 571-487-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2020-03-03 571-496-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2020-03-03 571-496-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2020-03-03 571-497-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2020-03-03 571-497-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2020-03-03 571-497-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2020-03-03 571-536-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2020-03-03 571-669-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2020-03-03 571-697-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2020-03-03 571-697-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2020-03-03 571-697-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2020-03-03 571-781-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2020-02-28 571-454-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2020-02-26 571-430-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2020-02-06 571-453-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2020-02-05 571-461-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN17 VA
2020-02-03 571-450-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LORTON VA
2020-02-03 571-454-6XXX 6000–6999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G MANASSAS VA
2020-02-03 571-464-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HERNDON VA
2020-02-03 571-600-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2020-01-29 571-554-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DALE CITY VA
2020-01-25 571-497-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.