Test the reachability of a host on an IP network and measure the round-trip time for sent packets.

Displaying the route (path) and measuring transit delays of packets across an IP network.

Displaying all DNS records and NameServers that is associated with a given domain name.

Displaying WHOIS information that is associated with a given domain name.

Returns your IP address.

Get Google PageRank and find out how site is important on the web.

Return domain name that is associated with a given IP address.

Shows request and response HTTP header and HTML source code of given URL.

Shows response HTTP header of given URL.

Shows list of IP addresses or subnets that are authorized to send email on behalf domain owners.

Get robots.txt and check access for crawlers with a given URL.