The Kenya Communications Act 1998 vests CCK with adjudicative powers in the discharge of its statutory mandate of licensing and regulating telecommunications, radiocommunication and postal services within the country. CCK has on a number of occasions exercised these powers in a bid to ensure provision of communication services and effective competition in the provision of such services.

Below are rulings and determinations made since CCK's inception.

• Short messages services (SMS) interconnection termination rates: "Addendum to interconnection determination No. 2 of 2010 - 1st January 2011 
• Determination on Interconnection Rates for Fixed and Mobile Telecommunications Networks, Infrastructure Sharing and co-location, and  Broadband Services in Kenya - 16th August 2010 
• Determination on Essar Telecom Kenya Ltd vs. Air Touch Connections Ltd, 8th January 2010
• Determination on retail and Interconnection rates among the Fixed and mobile Telecommunications Networks in Kenya - 22nd February 2007
• Ruling on the appeal by KenCell Communications Limited (now Celtel Kenya) over interconnection rates for payphones in the matter between KenCell and Telkom Kenya Limited - 31st October 2001
• Ruling on Internet Service Providers dispute on services offered by Telkom Kenya Limited - 6th August 2004