iBasis is one of the largest carriers of international voice traffic in the world and a global leader in VoIP.

iBasis is one of the largest carriers of international voice traffic in the world and a global leader in VoIP. In December 2009, iBasis became a wholesale subsidiary of Royal KPN N.V., the national carrier of the Netherlands, creating a new iBasis with unsurpassed strength in the fastest-growing segments of global telecommunications