Free Domain Analysis Tools

A complete toolkit for domain research — traffic, DNS, SSL, WHOIS, HTTP headers, redirects, backlinks, meta tags, robots.txt, email authentication, and subdomain discovery. All tools are free, require no signup, and run on our global edge network.

Why use Traffic Lens tools?

Completely free — No signup, no API key, no scan limits
Fast & edge-cached — All tools run on Cloudflare's global edge; repeated queries return instantly
No installation — Works in any browser; no CLI, no Docker, no Python dependencies
Privacy-respecting — We don't track your scans or require an account

All 13 tools

Traffic Checker — Monthly visits, bounce rate, sources, and quality score for any domain
Domain Comparison — Side-by-side traffic metrics for up to 5 websites
Subdomain Finder — Discover every subdomain via Certificate Transparency logs
DNS Lookup — A, AAAA, MX, TXT, NS, CNAME, SOA, CAA records via Cloudflare DNS
WHOIS Lookup — Registrar, registration date, expiry, nameservers via modern RDAP protocol
HTTP Headers Checker — Security score (HSTS, CSP), CDN detection, cache analysis
SSL Certificate Checker — Certificate expiry, issuer, covered domains, A-F grade
Redirect Chain Checker — Trace 301/302 hops, detect loops and SEO issues
Backlink & Authority Checker — Authority score, PageRank, referring-domain estimates
Meta Tags Analyzer — Title, description, canonical, Open Graph, Twitter Cards with 0-100 score
Robots.txt Tester — Parse user-agent groups, disallow paths, sitemap directives per RFC 9309
Email Authentication Checker — SPF, DKIM, DMARC, MTA-STS, BIMI audit with A+ to F grade
Trending Domains — Most analyzed sites this week

Use cases

SEO specialists — Traffic Checker + Redirect Checker + HTTP Headers to audit technical SEO
Security researchers — Subdomain Finder + SSL Checker + HTTP Headers for attack surface mapping
DevOps teams — DNS + SSL + Redirect + Headers to verify deployments
Domain investors — WHOIS + Traffic Checker to evaluate domain acquisitions
Brand protection — Subdomain Finder + WHOIS to monitor brand perimeter