Sub Domains:

What is a sub domain? Sub domains are technically called Canonical Domains or c-names for short.

An example would be like the following:
http://members.hosting.ph

The "domain." in front of "hosting.ph" is a sub domain. It works the same as a regular domain name.

Sub domain names can be anything you want. Some examples:
"mail.", "sales.", "marketing.", "resume.", "mykids.", "products.", "anything."

Sub Domains are like having an extra domain name but with out the higher price and with out the yearly renewal fee.
Sub Domain Names must be used in conjunction with your Domain Name.
Both must also use our DNS information.

There are no limits to how many sub domains you may have, request as many as you like.