DomainAnalyzer.com is an independent project built and run by Franck J, a domain investor based in Paris, France. The site offers six free, browser-based domain analysis tools — domain age, DNS records, SSL certificates, availability, reputation signals, and traffic signals — with no signup, no account, and no query logging. It has been live since February 2026.
Why I Built This
I buy and evaluate domains. Before this site existed, checking a single domain properly meant opening six different tools: one for the WHOIS registration date, one for DNS records, one for the SSL certificate, one for availability, one for reputation signals, and one for traffic estimates. Half of them wanted an email address before showing a result. Some logged every domain I searched — which, when you’re researching acquisitions, is information you’d rather keep to yourself.
So I built the tool I wanted: one place, one domain input, six checks, results in seconds, and nothing about your query stored anywhere. Then I put it online for free, because every domain investor, developer, and site owner has the same problem. It’s one of dozens of independent web projects I’ve built since 1999 — this is the one that solves my own daily workflow.
How the Tools Work
Every lookup runs directly in your browser against public data sources. Registration data comes from RDAP, the successor to WHOIS. DNS records are resolved through Cloudflare’s DNS-over-HTTPS service. SSL checks make a direct HTTPS connection to the domain you’re testing. Traffic and popularity signals combine Chrome UX Report data, Cloudflare Radar ranking buckets, Open PageRank, and Wayback Machine history. The reputation score is a composite of configuration signals: HTTPS status, DNS setup, email authentication records, and domain age.
I’m deliberate about what these results can and can’t prove. An availability check based on DNS is a strong signal, not a registrar-confirmed answer — always verify before buying. The reputation score reflects how well a domain is configured, not whether it appears on malware or phishing blacklists. The traffic score is built from public popularity signals, not visitor counts. Where a check has limits, the tool page says so.
Privacy
Your lookups are your business. Most checks run entirely in your browser — WHOIS, DNS, SSL and the availability lookups go straight from you to the public data sources, never through this site. Two exceptions need a server: the traffic estimates and the aftermarket listing check use API keys that cannot be exposed in a browser, so those requests pass through this site, appear in ordinary server logs, and their results are cached for a few hours. Nothing is profiled, linked to you, or sold. Site analytics run on Plausible, a cookie-free, privacy-focused service that collects only aggregate data — there is no Google Analytics and no analytics cookies of any kind. Advertising is separate: the site serves Google AdSense, which sets its own advertising and consent cookies and asks for consent where the law requires it. The full details are in the privacy policy.
A third path opened in September 2026: the agent endpoint at /wp-json/dat/v1/domain/, which lets an AI assistant read the same results as JSON. An assistant has no browser, so every check behind it runs from this server — RDAP, Cloudflare DNS-over-HTTPS, Open PageRank, Cloudflare Radar, and a direct TLS connection to the domain being checked in order to read its certificate. Those requests appear in ordinary server logs and each result is cached for one hour. Beyond that, the only thing recorded is a count of requests per user-agent family — how many arrived from ChatGPT, from Claude, from curl — and a daily tally of how many distinct domains were looked up. The domains themselves are not kept: the tally counts short-lived hashes that are discarded every day. There are no accounts and no keys, and rate limiting uses only a per-visitor counter that expires within the hour.
Independence and Affiliate Links
The tools are free and will stay free. The site is supported by clearly marked affiliate links — if you buy a domain or a service through one of them, I may earn a commission at no cost to you. Affiliate partnerships never influence tool results: the checks query public data sources directly and display what comes back.
Contact
Found a bug, got a feature request, or want to talk domains? Email franck@domainanalyzer.com — I typically reply within one to two business days. You can also use the contact page or find me on X/Twitter at @bonjourdomain.
