The main purpose of the presented study is to explore the existing risk of Internet addiction for undergraduate students of Czech universities. The research was conducted as quantitative research; a CIAS-R questionnaire was applied. The data were collected in the years just before the Covid-19 pandemic (between October 2019 and March 2020). 3,366 respondents (2,151 females and 1,215 males) participated in our questionnaire survey. The average CIAS-R score achieved by our respondents was 44 points. It equals 6% of addicted college students (when applying the cut-off point of 63/64), and 3% of addicted students (when applying the cut-off point of 67/68). A significantly higher risk was revealed in males and in full-time students compared to females, and part-time students, respectively. The type of faculty studied was proved to be a significant intervening variable. Applying the 63/64 cut-off point, we revealed 5.6% of addicted students among the students of faculties of education, which is alarming (even if we consider the fact that applying the 67/68 cut-off point, we revealed 2.7% of addicted students.). These students represented almost 50% of our respondents, and they, as future teachers, will play an important role in the prevention of risky behavior.