DNS Benchmark Tool – Compare and monitor resolvers

In plain words

DNS Benchmark Tool is a command-line utility that tests and compares DNS resolver performance. Built for developers debugging slow API requests, it allows users to benchmark a single domain across multiple resolvers, rank resolvers by latency or reliability, and continuously monitor performance with threshold alerts. The CLI tool is free and installable via pip, with a hosted version offering multi-region testing and historical tracking planned for early 2026.

written from the facts on this page · September 2026

From the sources

In the maker’s words, at launch

I built a CLI to benchmark DNS resolvers after discovering DNS was adding 300ms to my API requests. v0.3.0 just released with new features: compare: Test single domain across all resolvers top: Rank resolvers by latency/reliability/balanced monitor: Continuous tracking with threshold alerts 1,400+ downloads in first week. Quick start: pip install dns-benchmark-tool dns-benchmark compare --domain google.com CLI stays free forever. Hosted version (multi-region, historical tracking, alerts) coming Q1 2026. GitHub: https://github.com/frankovo/dns-benchmark-tool Feedback: https://forms.gle/BJBiyBFvRJHskyR57 Built with Python + dnspython. Open to questions and feedback!

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