"a subdivision of a registered, domain name website address"
A sub-domain is a unique, search engine accessible website address.
SUB-DOMAIN ADDRESS EXAMPLE - http://www.sub-domain.yourname.com
As exampled herein above, a sub-domain requires a domain name and thus, it is not possible to have a sub-domain address hosted by PRISM PORTAL, unless you have a domain name address, first.
Sub-domains can increase the website visitor's ease in accessing specific portions of your website; for example, www.gallery.yourchoice.com may be set up to provide direct access to an online page featuring your products, www.family.yourchoice.com may access pages dedicated to family members and personal pursuits, www.vacation.yourchoice.com may access a vacation travel dialogue and, all of these sub-domain addresses are individually accessible and totally search engine compatible and, do not require association or linkage from or to the homepage of www.yourchoice.com.
PRISM PORTAL hosting package 3 includes 10 sub-domain addresses at no extra charge and, hosting packages 4 and 5 can have a virtually unlimited quantity of sub-domains established. Because of website hosting technical limitations, sub-domains are not available with hosting packages 1 and 2 and, the quantity of sub-domains included with package 3, cannot be increased. Sub-Directory Addresses are an efficient and less costly alternative to sub-domains, provided without additional charge in packages 1, 2, 4, & 5, upon receival of customer's request.