SEO tools / Server, DNS and security
Reverse DNS lookup
The host name behind an IP address (PTR record).
More server, dns and security tools
DNS lookupA, AAAA, CNAME, MX, NS, TXT, SOA and CAA records of a domain.
DNS propagation checkerAsk eight public DNS resolvers around the world for the same record.
IP lookupNetwork owner (ASN), country and reverse DNS of an IP address or domain.
What is my IPYour public IP address and browser details.
SSL checkerCertificate issuer, expiry, names, chain and TLS version.
Ping testHow fast a server answers (TCP handshake time from our server).
Website hosting checkerWho hosts a website: IP, network, country and server software.
HTTP headers checkerEvery response header a URL sends.
How to use the reverse dns lookup
The host name behind an IP address (PTR record). Enter the IP address or domain above and press the button. Results appear on this page and you can share the link.
Visitors can run 30 checks a day. Create a free account for projects, site audits, rank tracking and saved keyword lists.