Siminn hf. is an Iceland based holding company engaged in the telecommunication sector. Its operating companies are divided into two segments: International Business and Domestic Business. International Business comprises operations in the United Kingdom, Denmark, Sweden and Norway. The companies within the segment include information technology provider Sirius IT, telecommunication providers Aerofone, Ventelo Denmark and Business Phone A/S, as well as On-Waves, which operates mobile phone services for ships. The companies within Domestic Business include telecommunication services providers, Siminn and Mila; an interactive television (TV) provider Skjarinn; yellow pages publisher Ja; Radiomidun ehf., which specializes in the telecommunication solutions for the fishing industry; Taeknivorur ehf., a wholesale importer of Siminn; Sensa ehf., which provides services within network infrastructure, and Trackwell, which specializes in the location-based applications for wireless networks.