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
2023-07-25 571-653-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2023-07-25 571-653-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2023-07-25 571-653-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2023-07-25 571-653-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2023-07-25 571-653-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2023-07-25 571-653-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2023-07-25 571-653-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2023-07-18 571-638-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H HERNDON VA
2023-07-18 571-638-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H HERNDON VA
2023-07-18 571-638-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H HERNDON VA
2023-07-18 571-638-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H HERNDON VA
2023-07-18 571-638-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H HERNDON VA
2023-07-18 571-648-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2023-07-18 571-648-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2023-07-14 571-626-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2023-07-14 571-626-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2023-07-14 571-626-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2023-07-14 571-626-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2023-07-07 571-317-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-618-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-618-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-618-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-637-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-637-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-637-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-637-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-637-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-637-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-637-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-637-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-07-07 571-638-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2023-07-07 571-647-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-07 571-647-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-07-05 571-626-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2023-07-05 571-640-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2023-07-05 571-640-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2023-07-05 571-640-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2023-06-27 571-640-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2023-06-23 571-604-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-06-23 571-604-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-06-23 571-604-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-05-31 571-640-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E MANASSAS 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.