Free domain and website tools
Check the plumbing under your site: domain, DNS, certificates, email and headers. 9 free tools, no sign-up.
- Domain authority checkerPopularity rank, age and a link to a domain's Ahrefs DR.Checks a live page
- Domain name checkerIs your name registered as .com, .io, .ai, .app, .dev or .co?Checks a live page
- Bulk domain authority checkerCompare rank and age for up to 20 domains at once.Checks a live page
- WHOIS lookupDomain age, registrar, expiry and name servers.Checks a live page
- DNS lookupEvery common DNS record for a domain, with TTLs.Checks a live page
- SSL checkerHTTPS, certificate issuer and expiry, and redirects.Checks a live page
- SPF, DKIM and DMARC checkerCheck SPF, DKIM, DMARC and MX so email reaches the inbox.Checks a live page
- HTTP header checkerEvery response header, with security and caching checks.Checks a live page
- Website down checkerDown for everyone or just you? Status, timing and DNS.Checks a live page