Undertaking the mission of an important infrastructure constructor of China’s Internet, since its inception CNNIC has been promoting the development of the service and operation platform for national internet infrastructure　resources, and drawn experience in the course of its construction, unremittingly enhancing technolo...

Since 2005, CNNIC has gradually set up SLOs (Service Level Objects) of the national infrastructure for domain-name resource service, and continuously attained and exceeded them. As records of CNNIC’s service, these SLOs cover the metrics such as availability and performance and have been included in SLA (Service Level Agre...