Compare software

MassDNS vs dnsx: catalog facts
MassDNS	dnsx
Best for: Administrators and security testers resolving large domain lists on networks they are authorized to assess	Best for: Query DNS records in bulk from the command line
Free Free and open source under GPL-3.0.	Free The open-source software is available without a license fee. Hosting, hardware and external services are separate.
Windows, Linux, Command line	Windows, macOS, Linux, Command line
Handles bulk DNS lookups Reads resolver lists and domain names from files All 3 strengths for MassDNS Handles bulk DNS lookups Reads resolver lists and domain names from files Outputs DNS responses for later filtering	Supports multiple record types and custom resolvers.
Intended for authorized DNS reconnaissance and testing	Results depend on the resolvers and DNS data you query.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for MassDNS github.com/blechschmidt/massdns Catalog checked October 8, 2026	Official website Full listing and sources Sources for dnsx github.com/projectdiscovery/dnsx github.com/projectdiscovery/dnsx/blob/dev/LICENSE.md Catalog checked September 22, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.