You can also connect to

Linkedin is a social Media website for Professional People.
It does not list Slovenia phonenumbers like historic Whitepages
but profiles of individual people.

Connected to Linkedin you can send messages
to people from Slovenia you found.

2016 Linkedin was acquired by Microsoft.

As of 2020 August 364.300 people from Slovenia
are connected to Linkedin.

More on the history of Microsoft
on the Brand Portal