Which LDAP object class is used in a white pages implementation?

`friendlyPerson` is not a standard or commonly used LDAP object class for white pages implementations.

`organizationalRole` is used to represent a role within an organization, not a general person entry in a white pages directory.

`posixAccount` is used to represent Unix-like user accounts, primarily for system login and group membership, not for general contact information in a white pages.

The `inetOrgPerson` object class is specifically designed to represent people with attributes suitable for internet-style directories, including contact information like email, phone, and address, making it ideal for a white pages implementation.

`whitepageUser` is not a standard LDAP object class defined in common schemas.