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
2021-02-08 571-710-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H LORTON VA
2021-02-08 571-710-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H LORTON VA
2021-02-08 571-710-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H LORTON VA
2021-02-04 571-701-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2021-02-04 571-701-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2021-02-04 571-701-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2021-02-04 571-701-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2021-02-04 571-701-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E NOKESVILLE VA
2021-02-04 571-998-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2021-02-04 571-998-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2021-02-04 571-998-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2021-02-03 571-463-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2021-02-03 571-463-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2021-02-03 571-463-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2021-02-03 571-463-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2021-02-02 571-998-8XXX 8000–8999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G INDENDNTHL VA
2021-01-28 571-998-0XXX 0000–0999Assigned TELNYX LLC 073H INDENDNTHL VA
2021-01-27 571-539-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2021-01-26 571-473-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN08 VA
2021-01-25 571-668-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-01-25 571-668-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-01-25 571-668-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-01-25 571-668-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-01-25 571-668-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2021-01-20 571-517-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E DULLES VA
2021-01-20 571-517-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E DULLES VA
2021-01-20 571-517-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E DULLES VA
2021-01-19 571-644-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-19 571-644-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-15 571-503-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-01-15 571-503-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-01-15 571-503-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-01-15 571-503-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-01-15 571-503-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2021-01-15 571-513-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2021-01-15 571-513-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2021-01-15 571-561-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E HAYMARKET VA
2021-01-15 571-561-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E HAYMARKET VA
2021-01-14 571-588-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-14 571-588-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-14 571-588-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE VA
2021-01-14 571-588-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ENGLESIDE 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.