[Home](./index.md) > [@digitalpersona/services](./services.md) > [SearchQuery](./services.searchquery.md) > [baseDN](./services.searchquery.basedn.md) ## SearchQuery.baseDN property A distinguished name of the entry at which to start the search. This is an optional parameter and if it set to `null` we will perform the search from a default base (an AD root for the DPCA AD Server, LDS partition root for the DPCA LDS Server) Signature: ```typescript baseDN?: string; ```