1.4.1 What's in a Domain Name?

Let's use power.arc.losrios.edu as an example.

edu is called a top-level domain . This part identifies certain attributes of a domain name. For example, edu means educational institute, com means commercial entity, org means non-profit entity and etc.

losrios is a subdomain of edu. arc is a subdomain of losrios.edu. However, power is a a hostname in the domain arc.losrios.edu.