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
2010-08-09 571-319-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2010-08-09 571-319-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2010-08-06 571-409-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F OCCOQUAN VA
2010-07-28 571-762-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2010-07-22 571-208-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2010-07-22 571-409-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2010-07-22 571-409-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2010-07-22 571-494-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2010-07-22 571-494-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2010-07-20 571-234-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-20 571-305-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2010-07-20 571-327-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2010-07-20 571-336-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F ENGLESIDE VA
2010-07-20 571-346-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F HERNDON VA
2010-07-20 571-393-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F MANASSAS VA
2010-07-20 571-409-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F OCCOQUAN VA
2010-07-20 571-445-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F HAYMARKET VA
2010-07-20 571-659-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DALE CITY VA
2010-07-16 571-327-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN17 VA
2010-07-14 571-494-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F TRIANGLE VA
2010-07-13 571-299-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HERNDON VA
2010-07-13 571-308-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-13 571-308-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-13 571-308-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-13 571-318-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-13 571-318-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-13 571-354-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-13 571-354-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-13 571-354-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN19 VA
2010-07-12 571-249-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-07-12 571-335-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-07-12 571-335-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-07-12 571-335-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2010-07-12 571-393-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2010-07-12 571-393-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2010-07-09 571-293-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2010-07-09 571-305-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2010-07-09 571-488-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2010-07-06 571-455-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2010-07-06 571-659-1XXX 1000–1999Assigned METROPCS, INC. 5562 DALE CITY VA
2010-07-01 571-319-5XXX 5000–5999Assigned IP HORIZON LLC 515J WSNGTNZN08 VA
2010-07-01 571-659-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F DALE CITY VA
2010-06-30 571-420-4XXX 4000–4999Assigned METROPCS, INC. 5562 LEESBURG VA
2010-06-30 571-420-5XXX 5000–5999Assigned METROPCS, INC. 5562 LEESBURG VA
2010-06-30 571-420-6XXX 6000–6999Assigned METROPCS, INC. 5562 LEESBURG VA
2010-06-28 571-250-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F HERNDON VA
2010-06-28 571-286-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2010-06-28 571-393-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F MANASSAS VA
2010-06-28 571-409-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F OCCOQUAN VA
2010-06-28 571-445-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F HAYMARKET 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.