NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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, all time — NPA 434
YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 21
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
2011-03-04 434-381-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E AMHERST VA
2011-03-04 434-549-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E DANVILLE VA
2011-03-04 434-664-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E APPOMATTOX VA
2011-03-04 434-713-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E DANVILLE VA
2011-03-04 434-766-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E DANVILLE VA
2011-03-04 434-835-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E DANVILLE VA
2011-03-04 434-993-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E CONCORD VA
2011-03-04 434-993-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E CONCORD VA
2011-02-16 434-219-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LYNCHBURG VA
2011-02-16 434-219-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LYNCHBURG VA
2011-02-16 434-219-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LYNCHBURG VA
2011-02-16 434-219-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LYNCHBURG VA
2011-02-16 434-219-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E LYNCHBURG VA
2009-01-29 434-563-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA
2009-01-29 434-563-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA
2009-01-29 434-594-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA
2008-05-29 434-563-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA
2008-05-29 434-563-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA
2008-05-29 434-563-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA
2008-05-29 434-632-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA
2008-05-29 434-632-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 367E EMPORIA VA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.