On the Internet

Many nonprofit organizations often use the .org or .us or .edu top-level domain when selecting a domain name to differentiate themselves from more commercially focused entities which typically use the .com space.

In the traditional domain categories as noted in RFC 1591, .org is for "organizations that didn't fit anywhere else" in the naming system, which implies that it is the proper category for noncommercial organizations if they are not governmental, educational, or one of the other types with a specific TLD. It is not specifically designated for charitable organizations or any specific organizational or tax-law status, however; it encompasses anything that does not fall into another category. Currently, no restrictions are enforced on registration of .com or .org, so you can find organizations of all sorts in either of these domains, as well as other top-level domains including newer, more-specific ones which may fit particular sorts of organizations such as .museum for museums or .coop for cooperatives. Organizations might also register under the appropriate country code top-level domain for their country.