Various WHOIS clients and security services also contain vulnerabilities, some of which make it possible for an attacker to execute malicious code on the querying device.

The whois and jwhois commands allow you to retrieve a lot of information on Internet domains–likely a lot more than you might imagine. Here’s how these commands work and how they can be useful.

This provides similar information to the WhoIs lookup. If there’s anything you still don’t understand or isn’t on this list, ICANN has a glossary for all the terms you may see.

WHOIS data has been key for verifying the ownership and rightful endpoint of that data for a long time, serving as a public directory to both identify and reach a website’s owners.

The upswing of WHOIS privacy services already played its part in this problem, and it seems that the issue will only get bigger now that registries are starting to mask their registrant information.

Creation of the fake server was possible because dotmobiregistry.net—the previous domain hosting the WHOIS server for .mobi domains—was allowed to expire after the server was relocated to a ...

Does WhoIs information – or using domain privacy – have any SEO implications? Learn what the experts say about WhoIs as a ranking factor.

WHOIS data has been key for verifying the ownership and rightful endpoint of that data for a long time, serving as a public directory to both identify and reach a website’s owners.

The whois command can also specify using a different port than the traditional TCP port 43 whois servers monitor for whois requests. The -p switch enables specifying the port, using whois -p, and ...