Mailbox Name
mail·box (-bäks′)noun☆ a box or compartment into which mail is put when delivered, as at one's home☆ a box, as on a street corner, into which mail is put for collectionComput. the part of an electronic mail system that stores incoming messages for a particular user

Name of Server or Organization
Domain Name System - definition of Domain Name System from ...... Any company, institution, or organization wanting to have its own domain name hasto ... For example, in Amsterdam, there is the European whois server at RIPE ... www.yourdictionary.com/domain-name-system - 16k - 2008-05-03DNS - definition of DNS from YourDictionary.com... organization.domain, where user is the name of the end user, organization is thename of the enterprise or other organization owning or ... Domain Name Server. ... www.yourdictionary.com/dns - 11k - 2008-05-03
Domain Category
class - definition of class from YourDictionary.com... class¹ Definition. class (klas, kläs). noun. a number of people or things groupedtogether because of certain likenesses or common traits; kind; sort; category; ... www.yourdictionary.com/class - 25k - 2008-05-03