NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

62 blocks assigned in May 2026 · 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, May 2026 — NPA 571
ONVOY, LLC - VA 21
NEW CINGULAR WIRELESS PCS, LLC - DC 17
LEVEL 3 COMMUNICATIONS, LLC - VA 10
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 2
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 Clear
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2026-05-29 571-757-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2026-05-27 571-934-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 DULLES VA
2026-05-26 571-749-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WSNGTNZN17 VA
2026-05-26 571-764-5XXX 5000–5999Assigned TELNYX LLC 073H OCCOQUAN VA
2026-05-20 571-656-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E TRIANGLE VA
2026-05-20 571-671-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E ENGLESIDE VA
2026-05-20 571-698-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E ARCOLA VA
2026-05-20 571-703-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2026-05-20 571-703-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E DALE CITY VA
2026-05-20 571-739-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2026-05-20 571-739-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2026-05-20 571-748-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2026-05-20 571-749-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2026-05-20 571-749-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2026-05-20 571-753-2XXX 2000–2999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2026-05-20 571-753-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E BRADDOCK VA
2026-05-20 571-757-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2026-05-20 571-757-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E WSNGTNZN19 VA
2026-05-20 571-759-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E HERNDON VA
2026-05-20 571-760-8XXX 8000–8999Assigned ONVOY, LLC - VA 138E WSNGTNZN08 VA
2026-05-20 571-764-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E OCCOQUAN VA
2026-05-20 571-850-3XXX 3000–3999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2026-05-20 571-850-4XXX 4000–4999Assigned ONVOY, LLC - VA 138E LEESBURG VA
2026-05-14 571-625-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F TRIANGLE VA
2026-05-14 571-682-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2026-05-13 571-739-2XXX 2000–2999Assigned BARR TELL USA 187K WSNGTNZN08 VA
2026-05-13 571-753-3XXX 3000–3999Assigned BARR TELL USA 187K BRADDOCK VA
2026-05-11 571-759-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HERNDON VA
2026-05-08 571-680-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - VA 079F LEESBURG VA
2026-05-08 571-708-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 DALE CITY VA
2026-05-08 571-708-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 DALE CITY VA
2026-05-08 571-708-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 DALE CITY VA
2026-05-08 571-770-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LEESBURG VA
2026-05-08 571-850-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LEESBURG VA
2026-05-07 571-761-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E LORTON VA
2026-05-07 571-763-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-07 571-763-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN17 VA
2026-05-06 571-747-7XXX 7000–7999Assigned ONVOY, LLC - VA 138E MANASSAS VA
2026-05-05 571-750-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2026-05-05 571-750-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2026-05-05 571-750-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2026-05-05 571-754-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 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.