Recital 38

Directories of subscribers to electronic communications services are widely distributed and public. The right to privacy of natural persons and the legitimate interest of legal persons require that subscribers are able to determine whether their personal data are published in a directory and if so, which. Providers of public directories should inform the subscribers to be included in such directories of the purposes of the directory and of any particular usage which may be made of electronic versions of public directories especially through search functions embedded in the software, such as reverse search functions enabling users of the directory to discover the name and address of the subscriber on the basis of a telephone number only.