In this report, we aim to assess the sensitivity and 5$\sigma$ discovery potential of IceCube, the largest neutrino observatory on Earth, and compare it with prior findings. Our thesis will focus on a point source analysis, exploring the energy and declination dependencies, with particular emphasis on high-energy neutrinos. The primary objective is to establish the feasibility of detecting 5$\sigma$ evidence supporting the hypothesis that blazars serve as sources of neutrinos in the Southern sky, as suggested in a recent publication. Our findings indicate a substantial improvement in both discovery potential and sensitivity for the Southern sky in recent years. Furthermore, we highlight the increasing significance of investigating the origins of high-energy neutrinos in the Southern sky.