Network lookups — find your IP, resolve DNS records, run WHOIS, check SSL certificates and HTTP headers, and test latency. These run as secure server-side lookups.
See your public IP and resolve any domain to its IP addresses.
Look up A, AAAA, MX, TXT, NS, CNAME and SOA records for a domain.
Measure connection latency to a host with a TCP-connect test.
Look up WHOIS registration details for a domain.
Check a site's SSL/TLS certificate, issuer and expiry.
Fetch and inspect the HTTP response headers for any URL.