Free tools
Free domain and network tools
Check any domain or website in seconds - from registration data and DNS records to the SSL certificate and email setup.
- Domain lookup (Whois)Look up any domain's registration and expiry dates, registrar and name servers via official RDAP, or check if…Open tool
- DNS lookupSee every DNS record of a domain - A, AAAA, CNAME, MX, NS, TXT, SOA and CAA - or the reverse (PTR) name of an…Open tool
- Nameserver lookupFind a domain's name servers and their IPs, and compare what DNS returns with what the registry holds to spot…Open tool
- Ping - response testTest whether our server can reach any website or IP and how fast it answers, in milliseconds, over TCP on por…Open tool
- Domain historySee when a domain was registered, last changed, transferred and when it expires from the official registry, p…Open tool
- SSL certificate checkerCheck any site's SSL certificate: issuer, names covered, expiry date and days left, and whether it is trusted…Open tool
- HTTP headers checkerSee the HTTP headers and status code your site sends, and check key security headers such as HSTS, CSP and X-…Open tool
- Email settings checkCheck a domain's MX mail servers and SPF and DMARC records so your messages reach the inbox instead of spam.Open tool
- Your IP addressSee your public IP address, its version (IPv4/IPv6) and browser details - handy when whitelisting access to a…Open tool
Why these tools?
When you connect a new domain, move a site or set up company email, questions come up: has the nameserver change arrived? Is the SSL certificate healthy? Why does my mail go to spam? We gathered the tools our support team uses every day and made them free for everyone.
Every check runs from our server using official sources such as DNS, the RDAP protocol and the Internet Archive, and we do not keep what you search for.