Public website tools
Free tools to check domains and websites
Look up domain registration and DNS records, identify website technologies, test page speed, and check SSL certificates.
Free to use. No signup required.
Choose what you want to check
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Registration options
Domain Search
Check an exact domain or compare a name across popular extensions. Review registrar availability, registration terms and supplied renewal prices.
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Registration & DNS
Domain Checker
Look up published registration details and DNS records, and see whether the website responded. Review the signals behind PeerPeek's domain scores.
Look up a domain → -
Platforms & services
Technology Checker
Explore clues about the platforms and services a website may use. Review matches by category and see available version details.
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Page speed & visitor experience
Performance Checker
Test how one page loads, or see available Core Web Vitals from visits across a website. Choose mobile or desktop.
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Certificate & trust
SSL Checker
Check certificate validity, exact hostname coverage and trust on TLS port 443. Review the issuer and expiration date.
Check a certificate →
What the results can tell you
Domain scores explain PeerPeek's own reading of available signals; they are not search rankings. Technology matches are clues, not a complete list of a site's software. For speed, you can test one page or look at available real-user data across a website over time. Certificate checks describe validity, hostname coverage and trust at the check time. The reports show the source and scope behind each result.