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
2022-10-28 571-543-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2022-10-21 571-563-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2022-10-21 571-563-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2022-10-21 571-583-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2022-10-20 571-832-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2022-10-20 571-832-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2022-10-20 571-832-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2022-10-20 571-832-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F BRADDOCK VA
2022-10-17 571-584-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2022-10-17 571-584-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2022-10-17 571-584-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2022-10-17 571-584-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2022-10-17 571-584-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN17 VA
2022-10-13 571-609-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2022-10-13 571-609-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2022-10-13 571-609-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2022-10-12 571-584-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2022-10-12 571-584-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2022-10-12 571-584-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2022-10-12 571-602-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2022-10-12 571-602-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2022-10-12 571-602-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2022-10-12 571-602-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2022-10-12 571-602-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2022-10-12 571-602-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANASSAS VA
2022-10-11 571-562-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2022-10-10 571-578-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEESBURG VA
2022-10-10 571-578-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEESBURG VA
2022-10-10 571-751-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARCOLA VA
2022-10-07 571-560-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2022-10-06 571-560-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2022-10-06 571-560-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2022-10-05 571-569-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2022-10-05 571-569-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2022-10-04 571-582-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-5XXX 5000–5999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-10-04 571-582-9XXX 9000–9999Assigned ONVOY, LLC - VA 138E LORTONMTRO VA
2022-09-30 571-456-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2022-09-30 571-517-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E DULLES VA
2022-09-30 571-543-6XXX 6000–6999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-09-30 571-543-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2022-09-30 571-562-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2022-09-30 571-562-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 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.