Domain analysis tools for WHOIS lookup, DNS records, SSL checking, and website diagnostics.
25 free tools available
Look up domain registration information and ownership details. Free, fast, and works entirely in your browser with no sign-up required.
Query DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA). Free, fast, and works entirely in your browser with no sign-up required.
Find out how old a domain is and when it was first registered. Free, fast, and works entirely in your browser with no sign-up required.
Verify SSL certificates, check expiration dates, and review certificate chain details. Free, fast, and works entirely in your browser with no sign-up required.
Check if a domain name is available for registration. Free, fast, and works entirely in your browser with no sign-up required.
Trace URL redirects, analyze full redirect chains, and identify status codes at each hop. Free, fast, and works entirely in your browser with no sign-up required.
Resolve any domain name to its corresponding IP address with DNS lookup details. Free, fast, and works entirely in your browser with no sign-up required.
Reverse DNS lookup - find domain names for an IP address. Free, fast, and works entirely in your browser with no sign-up required.
View and analyze HTTP response headers from any URL for debugging and SEO audits. Free, fast, and works entirely in your browser with no sign-up required.
Extract all internal and external links from any webpage URL for SEO analysis. Free, fast, and works entirely in your browser with no sign-up required.
Check if any website is currently up or down and view server response details. Free, fast, and works entirely in your browser with no sign-up required.
Download and extract the favicon icon from any website URL in multiple sizes. Free, fast, and works entirely in your browser with no sign-up required.
Look up MX (Mail Exchange) records for any domain. View mail servers and their priority values. Free, fast, and works entirely in your browser with no sign-up required.
Look up nameserver (NS) records for any domain. Identify your DNS provider instantly. Free, fast, and works entirely in your browser with no sign-up required.
Convert an IP address to a hostname using PTR record lookup. Identify who owns an IP address. Free, fast, and works entirely in your browser with no sign-up required.
Check HTTP status codes for multiple URLs at once. Identify broken links, redirects, and errors. Free, fast, and works entirely in your browser with no sign-up required.
Generate creative domain name ideas from your keywords and check availability across multiple TLDs. Free, fast, and works entirely in your browser with no sign-up required.
Check and parse DMARC records for any domain. Validate your email authentication policy. Free, fast, and works entirely in your browser with no sign-up required.
Validate and parse SPF records for any domain. Ensure your email sending policy is correctly configured. Free, fast, and works entirely in your browser with no sign-up required.
Look up and validate DKIM records for any domain and selector. Verify your email signing keys. Free, fast, and works entirely in your browser with no sign-up required.
Check DNS propagation across multiple global resolvers. See if your DNS changes have propagated worldwide. Free, fast, and works entirely in your browser with no sign-up required.
Run 8 DNS health checks on any domain using DNS-over-HTTPS. Verify A, AAAA, MX, NS, TXT (SPF/DMARC), SOA, CAA, and CNAME records instantly.
Check 24 common subdomains using DNS-over-HTTPS. Find active subdomains for any domain — useful for SEO site structure analysis and security audits.
Look up geolocation for any IP address or domain. View country, region, city, ISP, timezone, and coordinates. Detect your own public IP address instantly.
Check domain age and registration history for any website. Free, fast, and works entirely in your browser with no sign-up required.