Dialpad was founded by Serome Technology, Inc., Sangsu Oh, Hyunduk Ahn, and Wongyu Cho. Since its launch in October 1999 the service has grown to over 12 million registered users and commands a 46% share of the worldwide retail Voice over Internet Protocol (VoIP) market. Dialpad is defining the next generation of dial tone by providing advanced communications services and applications through leveraging its unique technology to provide consumers and businesses with low-cost, reliable and efficient voice services. Dialpad's patent pending Vega Server and technology has allowed the company to build a virtual communications network with the world's leaders in network infrastructure. Dialpad's investors include Serome Technology, inc., CMGI @ Ventures, Sterling Payot, Mokwon Assets Management Co., LTD and Citizen's Capital.

Dialpad's strong emphasis on quality has been a constant since its inception, from its user-friendly interface and industry-leading customer support, to its award-winning call quality.  This led CNET to rate Dialpad as "the only PC-Phone service we'd even consider," in their June 2003 review of PC-Phone services