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
2021-10-19 571-530-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-10-19 571-530-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-10-19 571-530-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-10-19 571-541-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H LEESBURG VA
2021-10-19 571-541-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H LEESBURG VA
2021-10-19 571-541-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2021-10-19 571-541-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2021-10-19 571-541-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LEESBURG VA
2021-10-18 571-507-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN17 VA
2021-10-18 571-574-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN17 VA
2021-10-18 571-574-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN17 VA
2021-10-18 571-574-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN17 VA
2021-10-18 571-574-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2021-10-11 571-615-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-11 571-615-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-11 571-615-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-11 571-615-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-11 571-615-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-11 571-615-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-11 571-615-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-11 571-615-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H INDENDNTHL VA
2021-10-08 571-786-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2021-10-08 571-786-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2021-10-01 571-534-6XXX 6000–6999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G OCCOQUAN VA
2021-09-29 571-774-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F TRIANGLE VA
2021-09-29 571-774-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F TRIANGLE VA
2021-09-28 571-222-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J HAYMARKET VA
2021-09-27 571-545-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2021-09-27 571-545-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2021-09-27 571-574-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2021-09-27 571-574-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2021-09-27 571-574-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2021-09-23 571-574-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J WSNGTNZN17 VA
2021-09-16 571-910-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HERNDON VA
2021-09-15 571-530-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-09-15 571-530-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-09-15 571-530-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-09-15 571-534-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2021-09-15 571-534-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2021-09-15 571-534-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2021-09-14 571-462-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2021-09-14 571-473-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2021-09-14 571-539-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2021-09-14 571-567-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-09-14 571-567-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2021-09-14 571-752-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2021-09-14 571-752-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2021-09-14 571-752-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2021-09-14 571-866-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2021-09-13 571-513-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY 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.