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
2010-10-01 571-293-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2010-10-01 571-293-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2010-10-01 571-322-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F ENGLESIDE VA
2010-10-01 571-354-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-10-01 571-399-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F INDENDNTHL VA
2010-10-01 571-406-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F TRIANGLE VA
2010-10-01 571-406-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F TRIANGLE VA
2010-10-01 571-455-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-10-01 571-455-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-10-01 571-577-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2010-10-01 571-577-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2010-10-01 571-577-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2010-09-30 571-316-3XXX 3000–3999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-30 571-316-4XXX 4000–4999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-30 571-316-5XXX 5000–5999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-30 571-316-6XXX 6000–6999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-30 571-316-7XXX 7000–7999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-30 571-316-8XXX 8000–8999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-30 571-316-9XXX 9000–9999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-27 571-293-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2010-09-27 571-358-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MANASSAS VA
2010-09-23 571-659-3XXX 3000–3999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-23 571-659-8XXX 8000–8999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-09-16 571-659-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALE CITY VA
2010-09-15 571-762-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2010-09-15 571-762-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2010-09-15 571-762-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2010-09-15 571-762-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2010-09-14 571-933-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E DULLESMTRO VA
2010-09-10 571-485-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F HERNDON VA
2010-09-10 571-762-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F MANASSAS VA
2010-09-02 571-455-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2010-09-02 571-488-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2010-08-27 571-207-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2010-08-26 571-355-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-08-26 571-355-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-08-23 571-319-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2010-08-23 571-449-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2010-08-19 571-420-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEESBURG VA
2010-08-19 571-420-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEESBURG VA
2010-08-19 571-488-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-08-19 571-488-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-08-19 571-488-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-08-18 571-389-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2010-08-14 571-814-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2010-08-11 571-293-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEESBURG VA
2010-08-11 571-293-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEESBURG VA
2010-08-11 571-293-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEESBURG VA
2010-08-10 571-577-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 LEESBURG VA
2010-08-10 571-762-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MANASSAS 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.