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Internet.nl vs MXToolbox: catalog facts
Internet.nl	MXToolbox
Free Free to use online.	Freemium Lookups on the site are free to use, with paid plans offered alongside.
Web, Self-hosted	Web
Tests website, email and connection setup in one place Covers IPv6, DNSSEC, TLS, DMARC, DANE and RPKI	Many email and DNS checks in one place MX lookups query the authoritative server directly
Checks standards compliance rather than site speed or content The score reflects the project's own weighting of standards	Pages carry prompts for the paid service Each check runs separately rather than as one combined report
Web application, Self-hosted	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.