Parked domains are web sites that are not currently being utilized by the site owner. Parked domains often have advertisements on them that are related to the subject of the domain. For example, if you have a domain by the name of “carinsurance.com” then you could park it with advertisements on the page related to that niche or industry.
There are two ways a domain name is parked – either by a domain owner through a domain name registrar or by default. When you first purchase a domain name it is parked by the domain name registrar automatically. For example, if you were to purchase a domain name from GoDaddy, the domain would be parked by GoDaddy automatically, until you place content on the site.