To improve transparency in the European gas market, the IEA has been collecting monthly gas flow data on an entry and exit point basis (physical flows) for winter and has made it available on an interactive map.
Clicking on border points and countries will show additional gas information. You can also explore other options as provided by the software,
for example the full screen mode by clicking at the bottom of the map on 

This map is without prejudice to the status of or sovereignty over any territory, to the delimitation of international frontiers and boundaries and to the name of any territory, city or area.