QuickLookup
Free online network tools. Find your IP address, ping, DNS lookup, WHOIS, SSL certificate checker, HTTP and security headers. No registration.
Network & Domains
My IP Address
Find your public IP address, IP version, reverse DNS and the details every website can see about you.
Ping
Test server availability and network latency with ICMP ping or a TCP connection to port 443 or 80.
DNS Lookup
View a domain's DNS records: A, AAAA, CNAME, MX, NS, TXT, SOA and CAA. For an IP address you get the reverse PTR record.
WHOIS Lookup
Find a domain's registrar, registration and expiry dates, status, name servers and DNSSEC.
Web & Security
SSL Checker
Verify a website's SSL/TLS certificate: validity, issuer, certificate chain, TLS version and domain match.
HTTP Headers & Redirects
View the server's HTTP response headers, status codes and the full redirect chain including response times.
Security Headers
Grade a website's security HTTP headers from A+ to F: HSTS, CSP, X-Frame-Options, Referrer-Policy and more.