Although Libernesia is intended to be a network state, territory has been a precondition for international recognition by other states. The heart of Libernesia is a small strip of land between Croatia and Serbia along the Danube. This land is part of a few small parcels that came into existence due to a border dispute between the two countries. For years, none of these areas was claimed by Croatia, Serbia, nor any other nation or private entity, effectively making them terra nullius, or a no man’s land.

On 13 April 2015, Vít Jedlička from the Czech Party of Free Citizens proclaimed the right-libertarian micronation of Liberland on Gornja Siga, raising awareness towards this unique situation and starting a race for many existing or brand new micronations to claim these territories. Many claims exist for all of these "pockets", most of them overlapping, but none of the micronations managed to attract any significant awareness, establish recognition, nor a permanent population.

On July 20, 2022, Libernesia symbolically claimed one of the smallest of these pockets, shown in the image as "pocket 2". The total surface of this parcel is just 10 hectares, making Libernesia the smallest state in the world, even smaller than Vatican, although smaller micronations do exist.