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DNSViz Toolkit

DNSViz Toolkit analyzes and visualizes DNS behavior, including DNSSEC security extensions, for people understanding or troubleshooting DNSSEC deployment.

Place
#15 of 37
Score
6.1
DNSViz Toolkit's website

What DNSViz Toolkit is

DNSViz Toolkit analyzes and visualizes DNS behavior, including DNSSEC security extensions, for people understanding or troubleshooting DNSSEC deployment. Its web analyzer maps the DNSSEC authentication chain and DNS resolution path and lists configuration errors. The command-line utility provides probe, grok, graph, print, and query subcommands. Results can be output as JSON, text, image graphs, or interactive HTML. DNSViz can diagnose zone files and planned changes to delegation, glue, and DS records before deployment. It supports Linux, macOS, FreeBSD, self-hosted use, and a web service. Install options include packages for several Linux distributions and FreeBSD, Homebrew and MacPorts for Mac OS X, plus a ready-to-use Docker container. The project recommends host networking in Docker for authoritative queries. Listed dependencies include Python, dnspython, pygraphviz, Graphviz, and OpenSSL. The repository identifies the license as GPL-2.0, and Verisign Labs sponsors ongoing development. The web analyzer is in maintenance mode: it cannot load historical analyses and does not save new analyses to its database.

Good

  • Visualizes DNSSEC chains and DNS resolution paths.
  • Lists detected configuration errors.
  • Tests planned zone and delegation changes before deployment.
  • Offers JSON, text, image, and interactive HTML output.
  • Free, with no paid plans or usage limits stated.

Watch out

  • Web analyzer is in maintenance mode.
  • Web analyzer cannot load historical analyses.
  • Web analyzer does not save new analyses to its database.
  • Listed dependencies include Graphviz and OpenSSL.

Who it suits

DNSViz suits administrators and technical teams diagnosing DNSSEC behavior or checking zone and delegation changes before deployment. It offers both a web analyzer and command-line toolkit.

Verdict

DNSViz provides DNSSEC-focused diagnostics through web and command-line workflows, with several output formats and pre-deployment checks. The web analyzer's maintenance status limits its use for retaining or revisiting analyses.

Plans and prices

From DNSViz Toolkit's own pricing page, checked 8 Oct 2026.

All about pricing
PlanPriceWhat it gives you
DNSViz ToolkitFreeNo paid plans or usage limits stated

The facts

Each one read from DNSViz Toolkit's own pages, with the date it was checked.

What it does

Analysis output
The toolkit can produce JSON results, text output, image graphs, and interactive HTML.checked 8 Oct 2026
Container
A ready-to-use Docker container is available, and the project recommends host networking for authoritative queries.checked 8 Oct 2026
Dependencies
The listed dependencies include Python, dnspython, pygraphviz, and cryptography; Graphviz and OpenSSL are among non-Python dependencies.checked 8 Oct 2026
DNSSEC analysis
The web analyzer visualizes the DNSSEC authentication chain and DNS resolution path, and lists detected configuration errors.checked 8 Oct 2026
Install options
The project lists packages for Debian, Ubuntu, Fedora, Gentoo, FreeBSD, RHEL and CentOS, plus Homebrew and MacPorts for Mac OS X.checked 8 Oct 2026
Intended users
The maker describes DNSViz as a resource for understanding and troubleshooting DNSSEC deployment.checked 8 Oct 2026
License
The repository identifies the project license as GPL-2.0.checked 8 Oct 2026
Pre-deployment testing
It supports diagnostic testing of zone files and planned delegation, glue, and DS record changes before deployment.checked 8 Oct 2026
Purpose
DNSViz analyzes and visualizes DNS behavior, including DNSSEC security extensions.checked 8 Oct 2026
Sponsor
Verisign Labs continues to sponsor ongoing development of DNSViz.checked 8 Oct 2026
Support
The project invites questions and comments through its contact form and says the reply email is used only to return correspondence.checked 8 Oct 2026
Toolkit commands
The command-line utility includes probe, grok, graph, print, and query subcommands.checked 8 Oct 2026
Web service limitation
The web analyzer is in maintenance mode, cannot load historical analyses, and will not save new analyses to its database.checked 8 Oct 2026

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