Systems and methods for searching domain names and owner information associated with the domain names in a web-based Whols search tool. Systems including one or more databases and one or more text indexes may store data including the domain names and owner information, and index text-searchable portions of the data. A search request may be received from a user with user preferences such as a selection of multiple or all top level domains. Search results may be ranked by relevancy, and may include the domain name with associated owner information.