DNS Lookup
Look up any DNS record type for a domain, or the PTR record for an IP address. Resolved live over DNS over HTTPS.
Free, no sign up Runs in your browser, nothing is uploaded
MX records show where a domain's email is delivered. TXT records hold SPF and DMARC policies (DMARC lives at _dmarc.yourdomain). Resolved over DNS over HTTPS from your browser.
More free tools
Email Header AnalyserTrace where an email really came from, how long it took and whether SPF, DKIM and DMARC passed.Whois LookupRegistrar, registration and expiry dates, nameservers and abuse contact for a domain or IP range.What Is My IPYour public IP address, where it appears to be, and which provider it belongs to.IP Address LookupWhere an IP address is, who owns it, its network and reverse DNS.Password GeneratorStrong random passwords, memorable passphrases and GUIDs, generated on your device.
Is your email domain protected?
Missing SPF, DKIM or DMARC records let attackers send email as your business. Our free Microsoft 365 monitoring checks every domain you own and tells you exactly what to fix.
