GRC’s DNS Benchmark performs a detailed analysis and comparison of the operational performance and reliability of any set of up to 200 DNS nameservers (sometimes also called resolvers) at once. When the Benchmark is started in its default configuration, it identifies all DNS nameservers the user’s system is currently configured to use and adds them to its built-in list of publicly available “alternative” nameservers. Each DNS nameserver in the benchmark list is carefully “characterized” to determine its suitability — to you — for your use as a DNS resolver. This characterization includes testing each nameserver for its “redirection” behavior: whether it returns an error for a bad domain request, or redirects a user’s web browser to a commercial marketing-oriented page. While such behavior may be acceptable to some users, others may find this objectionable.
- Compatible with all versions of Windows from Windows 95 through Windows 7.
- Compatible with Wine (Windows emulation) running on Linux and Macintosh.
- Hand-coded in 100% pure assembly language for highest precision and smallest size: 163 KBytes.
- Installation-free — nothing to install — just run the small executable file.
(Won’t change anything or mess up your system.)
- Lightweight (single packet), optional automatic and/or manual version checking.
- Task Scheduler-compatible for non-UI non-interactive background operation.
- Optional, automatic results logging for fully unattended operation.
- Comprehensive error return codes to support full automation.