Determine the registered owner of a domain or IP address block with the whois tool.
Find DNS records for a domain, results are determined using the dig DNS tool.
Lookup which ports are opened.
Using mtr an advanced traceroute tool trace the path of an Internet connection.
A common tool for testing connectivity to a host, perform a ping from our server.
Find forward DNS (A) records for a domain.
Find Reverse DNS records for an IP address or a range of IP addresses.
Find hosts sharing DNS servers.
Online Test of a zone transfer that will attempt to get all DNS records for a target domain.
Find the location of an IP address using the GeoIP lookup location tool.
Discover web hosts sharing an IP address with a reverse IP lookup.
Determine the status of an Internet facing service, firewall or common UDP services.
Determine the properties of a network subnet
View HTTP Headers of a web site. The HTTP Headers reveal system and web application details.
Dump all the links from a web page.