The article is based on a universal social network theory. It also offers a socio-cultural network of two subdialect areas: Western Aukštaitians of Kaunas and Eastern Aukštaitians of Panevėžys. The paper attempts to investigate migration directions of residents of the inhabited areas included into the Atlas of Lithuanian Language (ALL points). They are used to identify hypothetical zones of ALL points demonstrating a high degree of subdialect vitality.The research material consists of statistical data of 176 ALL points (121 of Western Aukštaitians of Kaunas and 86 of Eastern Aukštaitians of Panevėžys) collected in 2011–2015. The data issummarized in a table. The paper also includes a socio-cultural network completed with the help of the sof...