Third Level Domain Name Example. Organize logically the structure of your site. A third-level domain is the section of a domain name that is to the left of the dot of a second-level domain SLD that is considered a domain extension.
Even though statistics for data-informed results on what the top subdomains actually are this is a list of 3rd level domains that you probably recognize being in active use both by people and by server-to-server or client-to-server Internet communications. Similar to the second level domain name these names are also open for customisation. Organize logically the structure of your site.
The second level domain identifies essentially what the domain is about.
In the Domain Name System DNS hierarchy a second-level domain SLD or 2LD is a domain that is directly below a top-level domain TLD. Advantages of Domain Name. Even though statistics for data-informed results on what the top subdomains actually are this is a list of 3rd level domains that you probably recognize being in active use both by people and by server-to-server or client-to-server Internet communications. Next are third-level domains which are written immediately to the left of a second-level domain.