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GRC DNS Benchmark

Freemium#13 of 37 in Network Diagnostic Software

GRC DNS Benchmark: A focused DNS benchmarking utility for comparing resolver performance from your network. Ranked #13 of 37 in Network Diagnostic Software by our editors (7.7/10); pricing: Free plan; best for DNS resolver performance benchmarking.

7.7/10Editor score

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GRC DNS Benchmark7.7 Visit GRC

At a glance

Editor score
7.7 / 10
Pricing
Free plan
Best for
DNS resolver performance benchmarking
Free plan
Yes
Facts checked
20 Sep 2026

Where it wins
- Compares up to 500 resolvers with cached and uncached lookups
- Covers DNSSEC, IPv4, IPv6, DoH, and DoT resolvers
- Exports CSV results and supports unattended command-line operation
Where it doesn't
- Desktop-focused deployment limits it to Windows, Linux/Wine, and Mac/Wine
- Results reflect the network location where the benchmark runs
- The free v1 and paid v2 editions provide different product versions

Our verdict on GRC DNS Benchmark

GRC DNS Benchmark is a desktop utility for comparing DNS resolvers from a user's own network location. It measures cached, uncached, and dot-com lookup performance, reports reliability and lost queries, checks DNSSEC authentication, and examines behaviors such as error redirection and DNS rebinding protection. It is aimed at network administrators, technically inclined users, and anyone choosing between DNS resolvers. Version 2 supports Windows, Linux/Wine, and Mac/Wine, while the published product information describes both a free v1 freeware edition and a paid v2 commercial edition.

Its main strength is diagnostic depth within a focused DNS use case. The application can compare built-in, system-configured, and custom resolver lists, with support for up to 500 resolvers at once. Results include charts and tables, and the benchmark covers conventional IPv4 and IPv6 resolvers alongside DNS over HTTPS and DNS over TLS. That combination makes it useful when speed alone is not enough and reliability, DNSSEC authentication, or resolver behavior also matters.

For repeatable workflows, GRC DNS Benchmark adds CSV export, unattended command-line operation, and custom fastest-resolver lists. These features suit reporting, scripted comparisons, and follow-up configuration work. The tradeoff is its narrow scope and desktop-oriented delivery: it is a DNS resolver benchmarking tool rather than a broad network monitoring suite, and the results describe conditions from the network location running the benchmark. Choose it for detailed resolver comparison and DNS-specific checks; choose an alternative if you need wider infrastructure monitoring or a non-desktop service.

Your product? Our editors can test GRC DNS Benchmark in depth and publish a review, labelled as paid · from $99/mo →

GRC DNS Benchmark pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 20 Sep 2026.

See plans on grc.com

All 1 GRC DNS Benchmark plans and prices →

GRC DNS Benchmark fact sheet

Free plan	Yes
Paid from	Not verified
Deployment	Desktop
Path visualization	Not verified
DNS diagnostics	Yes
Packet-loss analysis	Yes
Command-line interface	Yes
Target limit	500 targets
Supported platforms	Windows; Linux/Wine; Mac/Wine
Deployment	Desktop
Platforms	Windows, Linux, macOS
Compliance & security	PCI DSS
Support	Email, Community, Docs
Built for	Solo, Small business, Enterprise (editorial estimate)
Pricing	Free plan (source)
Website	grc.com
Facts checked	20 Sep 2026

Alternatives to GRC DNS Benchmark

See all GRC DNS Benchmark alternatives →

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Featured on iTechGuides

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update