IDT Corporation Class B, also called IDT, is a multinational holding company, which engages in the distribution and market of communications and payment services. It operates through the Telecom and Payment Services, and net2phone-UCaaS segments. Read More The Telecom and Payment Services segment markets and distributes multiple communications and payment services. The net2phone-UCaaS 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.