http://dk
[em_37]
http://3.141592653589793238462643383279502884197169399375105820974944592.com/
v2019 [em_37] http://3.141592653589793238462643383279502884197169399375105820974944592.com/
这应该是.dk注册局注册了一个0位的域名。
http://ai./
幻焕 http://ai./
涉及到知识盲区了,科普一下