Granted, some of this information can be misleading because IP addresses can trace back to the ISP rather than the actual organization. But, sometimes attackers get lucky. Most of the time, they can uncover where sites are being hosted and gain some basic information about the company’s network configuration.

In addition to the IP address information, every organization with a domain has domain registration information. Like IP information, for most sizable organizations, it’s going be generic and not reveal much that’s useful. But again, sometimes attackers get lucky.