A sponsored Top-Level Domain (sTLD) represents a specific community served by the domain.
The communities involved are based on ethnic, geographical, professional, technical or other theme concepts proposed by private agencies or organizations that establish and enforce rules restricting the eligibility of registrants to use the Top-Level Domain (TLD)
A sTLD is one of the categories of TLDs maintained by the Internet Assigned Numbers Authority (IANA) for use in the Domain Name System of the Internet. IANA currently distinguishes the following groups of Top-Level Domains:
.rich