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
2023-12-21 571-629-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-12-21 571-629-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-12-21 571-629-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN08 VA
2023-12-19 571-240-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E HERNDON VA
2023-12-15 571-661-0XXX 0000–0999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-12-15 571-661-1XXX 1000–1999Assigned ONVOY, LLC - VA 138E WSNGTNZN17 VA
2023-12-08 571-628-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2023-11-17 571-627-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-11-17 571-627-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-11-17 571-627-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-11-17 571-627-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-11-17 571-627-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-11-17 571-627-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-11-17 571-627-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 LEESBURG VA
2023-11-16 571-656-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRIANGLE VA
2023-11-16 571-656-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRIANGLE VA
2023-11-15 571-617-6XXX 6000–6999Assigned TELNYX LLC 073H LEESBURG VA
2023-11-09 571-688-9XXX 9000–9999Assigned TELNYX LLC 073H INDENDNTHL VA
2023-10-19 571-801-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-801-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-802-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-803-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-804-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE VA
2023-10-19 571-804-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 ENGLESIDE 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.