This report analyses developments in the Dutch mass market (consumer & SOHO) for fixed telephony in the first quarter of 2018, and compares the findings with previous quarters. The analysis is based on Telecompaper's continuous research into the development of the Dutch communication services market. The focus is on KPN as the only national fixed network operator and the VoIP services provided by cable network operators (Ziggo) and DSL network operators (Online.nl and Tele2) as well as via fibre networks.