See registration data related to a domain, IP address (IPv4 or IPv6) or AS number.

Determine the route taken by packets across an IP network (IPv4 or IPv6).

Show the geographical location for domain name or IP address (IPv4 or IPv6).

Query the DNS server on all possible records. Results are directly from the root servers so no cached records are retrieved.

Performs a DNS query for the MX records and checks all SMTP servers for accepting email.

Check to see if an IP address is listed with nearly 100 DNS based anti-spam databases.

Find out how long it takes for packets to reach its destination.

Find other websites hosted on the same web server.

Lookup a MAC address to its vendor or look which MAC addresses belong to a vendor.

This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML.

This tool will show the search results based on different countries.

See what is behind every tiny URL.