Here is one nifty service that can dig up useful information about a website, a domain or an IP address and it doesn’t cost a dime.
A service aptly named CentralOps.net offers a collection of free online network utilities. It can yield useful insights in no time flat.
To investigate a domain or an IP address, head straight to this page:
The service can currently check the domain whois record, the network whois record (they are not the same thing, mind you!), for instance. It can also obtain DNS records for a domain, run traceroute and perform a service scan. Nice.