NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

43 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
BANDWIDTH.COM CLEC, LLC - VA 11
ONVOY, LLC - VA 10
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
2023-08-22 571-654-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-08-22 571-654-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-08-22 571-654-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-08-22 571-654-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-08-22 571-654-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-08-18 571-650-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F ARCOLA VA
2023-08-18 571-650-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F ARCOLA VA
2023-08-15 571-546-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2023-08-15 571-546-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2023-08-15 571-546-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2023-08-15 571-583-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRADDOCK VA
2023-08-11 571-609-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2023-08-11 571-609-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2023-08-09 571-546-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-08-09 571-546-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-08-09 571-604-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-08-09 571-609-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-08-09 571-653-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-08-09 571-653-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-08-09 571-653-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-08-02 571-604-3XXX 3000–3999Assigned TELNYX LLC 073H WSNGTNZN19 VA
2023-07-27 571-561-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E HAYMARKET VA
2023-07-27 571-563-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-07-27 571-583-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2023-07-27 571-583-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2023-07-27 571-592-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2023-07-27 571-592-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2023-07-27 571-592-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2023-07-27 571-605-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2023-07-27 571-605-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2023-07-27 571-605-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2023-07-27 571-638-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-07-27 571-638-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-07-27 571-638-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-07-27 571-648-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-07-27 571-648-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-07-27 571-648-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-07-27 571-648-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-07-27 571-648-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-07-27 571-648-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-07-27 571-648-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-07-27 571-727-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E LORTON VA
2023-07-25 571-650-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2023-07-25 571-650-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2023-07-25 571-652-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2023-07-25 571-652-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2023-07-25 571-652-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2023-07-25 571-652-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2023-07-25 571-652-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2023-07-25 571-652-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E 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.