BelWü, which stands for Baden-Württemberg's extended LAN, is the data network that connects the scientific institutions of the state of Baden-Württemberg in Germany. It serves as a vital link between universities, colleges, the Baden-Württemberg Cooperative State University, other scientific and public institutions, schools, and public libraries. BelWü provides a comprehensive range of services and support to meet the unique needs of these institutions.

Their network infrastructure offers a detailed overview of the topology, routing, backbone, and peering policies. They also provide useful tools for analysis and debugging, such as BGP Looking Glass, IPv6 Test, Speedtest, and RIPE Atlas. Additionally, BelWü offers various internet connection options and services, all of which can be found in their detailed pricing list.

Customers can access these services by submitting the appropriate forms and can find helpful FAQs, guides, and troubleshooting support on their website. With a commitment to excellence and a focus on fostering collaboration within the scientific community, BelWü continues to play a crucial role in advancing research and education in Baden-Württemberg