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
2023-10-19 571-823-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-823-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-823-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-823-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-823-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-823-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-823-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-823-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-824-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-12 571-546-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-10-12 571-546-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-10-12 571-657-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2023-10-12 571-657-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2023-10-12 571-661-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2023-10-12 571-663-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-10-12 571-663-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2023-10-09 571-658-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-09 571-658-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-10-05 571-593-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 LEESBURG VA
2023-10-04 571-624-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2023-09-29 571-657-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MANASSAS VA
2023-09-28 571-688-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2023-09-28 571-688-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2023-09-28 571-688-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2023-09-28 571-688-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2023-09-28 571-688-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E INDENDNTHL VA
2023-09-27 571-596-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2023-09-27 571-596-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2023-09-20 571-657-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2023-09-20 571-657-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2023-09-18 571-617-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2023-09-18 571-617-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2023-09-18 571-617-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E LEESBURG 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.