Network and internet
Show your own IP address, check a domain’s DNS records, SSL certificates, HTTP headers and email security, look up domains and calculate subnets.
Tools
- My IP address Show your public IPv4 and IPv6 address.
- DNS lookup Query A, AAAA, MX, TXT and other records.
- Check email security Check a domain’s SPF, DMARC, DKIM and MX.
- Check an SSL certificate Validity, issuer and chain of a website.
- HTTP headers & redirects Response headers and redirects of an address.
- Domain Whois Who owns a domain and when it expires.
- Subnet calculator Network address, mask and range for IPv4 and IPv6.