Maintenance contract : A legally binding contract between company and the individual or group requesting registration for a domain name.

Management Domain : The process of keeping information relating to a domain name up to date. This includes DNS and contact information. A management domain usually encompasses a large category of users.

Multi-Lingual Domain : A domain name that contains characters outside the normal range of English-language 7-bit ASCII domains. I.e. a domain that uses characters not in the following list: a-z, 0-9 or "-".

Multiple Domains : More than one domain name pointing to one web site. One will be the primary domain, the rest will be auxiliary domains.