Ookla LCC., a subsidiary of Ziff Davis, has acquired Helsinki-based Ekahau. Ekahau delivers wireless LAN design and problem-solving tools. The company has more than 15,000 customers around the world. The acquisition broadens the offering portfolio of Ookla, the global leader in worldwide internet performance testing. The vendors of Ekahau include Nextit Ventures and the current Chairman of Nokia, Risto Siilasmaa. The purchasing price is undisclosed, but it is estimated to be over USD 100m according to Talouselama.