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
2023-01-19 571-614-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2023-01-19 571-614-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2023-01-19 571-614-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2023-01-19 571-614-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2023-01-19 571-614-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2023-01-17 571-605-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2023-01-11 571-597-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-01-11 571-597-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-01-11 571-597-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-01-11 571-597-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-01-11 571-604-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-01-11 571-604-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-01-11 571-604-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-01-11 571-605-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2023-01-11 571-605-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2023-01-09 571-597-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2023-01-09 571-602-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2023-01-09 571-602-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2023-01-09 571-603-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2023-01-09 571-603-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2023-01-05 571-583-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRADDOCK VA
2022-12-12 571-596-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2022-12-12 571-596-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2022-12-12 571-609-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2022-12-12 571-609-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2022-12-07 571-596-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2022-12-07 571-751-1XXX 1000–1999Assigned TELNYX LLC 073H ARCOLA VA
2022-12-06 571-504-2XXX 2000–2999Assigned METROPCS, INC. 5562 ENGLESIDE VA
2022-12-06 571-563-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2022-11-30 571-547-4XXX 4000–4999Assigned TELNYX LLC 073H WSNGTNZN08 VA
2022-11-30 571-560-9XXX 9000–9999Assigned TELNYX LLC 073H WSNGTNZN08 VA
2022-11-29 571-593-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEESBURG VA
2022-11-15 571-877-3XXX 3000–3999Assigned TELNYX LLC 073H LORTONMTRO VA
2022-11-09 571-592-0XXX 0000–0999Assigned COMMIO, LLC 939H OCCOQUAN VA
2022-11-09 571-592-1XXX 1000–1999Assigned COMMIO, LLC 939H OCCOQUAN VA
2022-11-08 571-583-1XXX 1000–1999Assigned COMMIO, LLC 939H BRADDOCK VA
2022-11-07 571-584-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2022-11-07 571-584-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2022-11-07 571-602-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MANASSAS VA
2022-11-04 571-590-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-04 571-590-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-11-02 571-563-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F HERNDON 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.