Free tools for developers

Point any of these at a website and get a straight answer in seconds. No account, no noise. Each one runs the same check Ranetrace watches for you continuously.

Security

Check how exposed a site is, from its certificate to its response headers.

SSL/TLS certificate checker

Check any site's SSL/TLS certificate, its issuer, and how many days until it expires.

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Security headers checker

Grade a site's HTTP security headers, from HSTS to Content-Security-Policy.

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Blocklist checker

Check whether a domain or IP is listed on the major security and spam blocklists.

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DNS & domain

Inspect the records and registration behind a domain.

DNS lookup

Look up the A, AAAA, MX, TXT, and other DNS records behind any domain.

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Domain & WHOIS lookup

See a domain's registrar, registration dates, lock status, and when it expires.

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Availability

Confirm a site is up and reachable right now.

HTTP status & speed check

Check whether a site is up, its HTTP status code, and where its response time goes.

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Start monitoring today

Websites go down and code throws errors. Ranetrace tells you when it happens to yours, why it matters and what to do next.

Start your 30-day free trial From $9 a month. No credit card required.