IDT Corp. operates as a holding company. The firm engages in the distribution and market of communications and payment services. It operates through the following segments: Telecom and Payment Services and net2phone. The Telecom and Payment Services segment markets and distributes multiple communications and payment services. The net2phone segment comprises cloud-based PBX services offered to enterprise customers mainly through value-added resellers, service providers, telecom agents and managed service providers, SIP trunking, which supports inbound and outbound domestic and international calling from an IP PBX and cable telephony. The company was founded by Howard S. Jonas in August 1990 and is headquartered in Newark, NJ.