The United Kingdom left the European Union on 31 January 2020, at midnight. This change is reflected in the Ipregistry API and data sets.

The field in_eu is returning true for the remaining 27 state members: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Italy, Ireland, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Spain, Slovakia, Slovenia and Sweden.