What is a second-level domain name?
The portion of the domain name that appears immediately to the left of the top-level domain is the second-level domain name (the “verisign” in “verisign.com”, for example). Many organizations and individuals register multiple domain names using the same second-level domain name with different top-level domain names (verisign.com, verisign.tv, verisign.de, etc.). Different domain names may provide different types of content to different audiences (media-rich content on the .tv Web site, and German language content on the .de Web site, for example).