Publicly available directories of end-users of electronic communications services are widely distributed. Publicly available directories means any directory or service containing end-users information such as phone numbers (including mobile phone numbers), email address contact details and includes inquiry services. The right to privacy and to protection of the personal data of a natural person requires that end-users that are natural persons are asked for consent before their personal data are included in a directory. The legitimate interest of legal entities requires that end-users that are legal entities have the right to object to the data related to them being included in a directory.