The high dependency on information and communication technologies (ICT) and the growing risk of interconnected crises such as internet blackouts increase the need for resilience. Enhancing the understanding of internet blackouts is crucial for informed disaster response systems. This paper analyzes how internet blackouts affect information flows in organizations. It contains highly interdisciplinary expertise achieved through expert interviews and feedback workshops with critical infrastructure (CI) sector representatives. Unlike other studies, this study investigates the disaster response phase from a meta-level perspective. By establishing Causal-Loop-Diagrams (CLDs), the impacts of internet blackouts on information flows in organizations are visualized and analyzed. A Building Block Model, consisting of generic blocks applicable to organizations of different economic sectors, is introduced. An adaption to sector-specific requirements is demonstrated for the transport and health sector. Furthermore, our research provides a guideline on practical measures to mitigate incidents during the disaster response phase.