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
2021-12-07 571-478-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-12-07 571-516-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2021-12-07 571-516-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2021-12-07 571-587-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-12-07 571-587-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-12-07 571-587-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-12-07 571-587-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-12-07 571-587-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-12-07 571-587-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-12-07 571-622-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-12-07 571-622-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-12-07 571-622-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-12-07 571-622-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-12-03 571-534-2XXX 2000–2999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G OCCOQUAN VA
2021-11-23 571-561-4XXX 4000–4999Assigned METROPCS, INC. 5562 HAYMARKET VA
2021-11-23 571-561-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAYMARKET VA
2021-11-19 571-478-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-11-19 571-478-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-11-19 571-478-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-11-19 571-478-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-11-19 571-478-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-11-19 571-478-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-11-19 571-518-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2021-11-19 571-576-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2021-11-19 571-576-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2021-11-15 571-504-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ENGLESIDE VA
2021-11-15 571-504-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ENGLESIDE VA
2021-11-15 571-516-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H TRIANGLE VA
2021-11-15 571-516-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H TRIANGLE VA
2021-11-15 571-667-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H LORTON VA
2021-11-12 571-530-0XXX 0000–0999Assigned TELNYX LLC 073H WSNGTNZN19 VA
2021-11-12 571-530-6XXX 6000–6999Assigned TELNYX LLC 073H WSNGTNZN19 VA
2021-11-12 571-561-3XXX 3000–3999Assigned TELNYX LLC 073H HAYMARKET VA
2021-11-09 571-534-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-11-09 571-534-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-11-09 571-534-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-11-09 571-573-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H NOKESVILLE VA
2021-11-09 571-573-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H NOKESVILLE VA
2021-10-27 571-516-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2021-10-26 571-561-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HAYMARKET VA
2021-10-26 571-561-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H HAYMARKET VA
2021-10-26 571-774-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2021-10-22 571-576-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2021-10-19 571-518-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H MANASSAS VA
2021-10-19 571-518-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MANASSAS VA
2021-10-19 571-518-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H MANASSAS VA
2021-10-19 571-518-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MANASSAS VA
2021-10-19 571-518-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MANASSAS VA
2021-10-19 571-530-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN19 VA
2021-10-19 571-530-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN19 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.