No. 33 of 39 ·Network Diagnostic Software

GRC DNS Benchmark

Name: GRC DNS Benchmark
Price: 9.95 USD

Windows · Mac · Linux

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Freedom report

Two barsScore 5.1

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

GRC DNS Benchmark is ranked #33 of 39 in network diagnostic software on Freedom251. It runs on Linux, macOS, Windows. There is no free plan.

GRC DNS Benchmark plans and pricing

All plans

DNS Benchmark v2 $9.95 once $9.95 one time Lifetime use · future improvements included grc.com · 3 Oct 2026

Compared on network diagnostic software

Free plan: Yes
Deployment: desktop
DNS diagnostics: Yes
Packet-loss analysis: Yes
Command-line interface: Yes
Target limit: 500 targets
Supported platforms: Windows; Linux/Wine; Mac/Wine

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The record

Purpose: DNS Benchmark measures the performance of local and remote DNS nameservers to help select fast resolvers for a network and location.
Protocols: Version 2 benchmarks IPv4, IPv6, DNS over HTTPS, and DNS over TLS resolvers side by side.
Measurement accuracy: The default benchmark runs 250 query sets per resolver, and the sample count can be changed to 1x, 5x, 10x, 20x, 50x, or 100x.
Resolver list: The built-in list includes 126 IPv4, 43 IPv6, 81 DoH, and 60 DoT resolvers, while a custom list builder scans 4,909 possible resolvers.
Resolver limit: The benchmark can test up to 500 resolvers at once.
Results: Benchmark results can be saved as a text file or a spreadsheet-readable CSV file.
DNSSEC: The software identifies DNSSEC-aware resolvers by coloring them green.
Supported systems: Version 2 runs on Windows 7, 8, 10, 11, and later, and also runs on Linux under WINE.
Freeware availability: GRC says it stopped offering the original v1 freeware because its resolver ranking was no longer correct for the modern Internet.
Who it is for: The maker describes the tool as a way to select the fastest DNS resolvers for a user's network and location.
Support: GRC provides technical support through email and points users to its searchable web forums for product questions.
Company: Gibson Research Corporation is owned and operated by Steve Gibson, and the site identifies Laguna Hills, California, USA.
Privacy and security: GRC's privacy policy says its e-commerce system is server-side without browser scripting or cookies and that purchasing information is stored encrypted.
Headquarters: Laguna Hills, California, USA

Where it ranks on Freedom251

Best Network Diagnostic Software in 2026#33 of 39

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Sources

grc.com/dns/benchmark.htm· checked 3 Oct 2026
grc.com/dns/why_no_version_1.htm· checked 3 Oct 2026
grc.com/support.htm· checked 3 Oct 2026
grc.com/privacy.htm· checked 3 Oct 2026