Windows中， 在命令行输入( ) 命令可以得到如下的回显。

Server: UnKnown

Address: 159.47.11.80

xxx.edu.cn

primary name server = nsl. xxx.edu.cn

responsible mail addr = mail@xxx.edu.cn

serial = 2020061746

refresh = 1200 (20 mins)

retry =7200(2 hours)

expire = 3600(1 hour)

default TTL = 3600(1 hour)