SEO Tools

Free online webmaster utilities: Whois, DNS lookup, bulk Ping, firewall check, SSL certificate lookup — no download required.

FAQ

What does Whois lookup show?

Registrar, registrant info (when public), registration/expiry dates, nameservers, and domain status.

What is firewall / GFW check?

Tests whether a domain is blocked by the Great Firewall so mainland China users cannot reach it.

Which DNS record types are supported?

A, AAAA, CNAME, MX, NS, TXT and other common types — batch query multiple domains at once.

Are SEO tools free?

Yes. All SEO diagnostics are free with no login required.