Comparing with the top-level domains(TLD) such as the root servers
the local authoritative servers were more vulnerable to device failures and malicious attacks.It was described the existence of authoritative servers and presented a novel domain measurement tool named DNSAuth to collect the information of local authoritative servers automatically.Experiments to the real-life authoritative servers were conducted which highlighting three important aspects: the distribution
the geographic location and their impacts on performance and security.According to five representative attributes
the authoritative servers of China Top100 websites were evaluated and the result shows that only 32% of all the servers act better in performance and security.