web - Dig command ussage? -


i have use dig command many times find subdomain take on vulnerability when satisfy results, good, little bit confused format please take look,

command:- dig docs.domain.com

docs.domain.com. 10799 in cname domain.github.io.

domain.github.io. 1014 in cname xxx.github.xxx.fastly.net.

xxx.github.xxx.fastly.net. 18 in ipaddress

how should understand format?

thank you


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