CBS (Statistics Netherlands) developed Person Network (PN), a file that describes networks of the entire population of the Netherlands in 2018. The potential networks of individuals are derived from administrative data (microdata) and contain five so-called network layers: family members, household members, neighbours, colleagues, and classmates. The first pilot for this work, focusing on the information over 2014, was developed earlier through the ODISSEI Secure Super Computer (OSSC). This article discusses the main improvements and extensions in the Person Network file and describes some of the results of the application of the file in the segregation research.