MA Di, male, born in November 1984 and with a Doctor’s degree. He received his bachelor degree in Communication Engineering from Beijing Jiaotong University in July 2007. In the same year, he became a candidate for a Master’s degree in at Institute of Computing Technology of CAS and obtained a Doctor’s degree in Engineering in July 2012. He has been working in CNNIC since then. His fields of research include IP address management technology, next generation Internet, and trustworthy Internet.