dns - Is this domain a second-level domain name? - 


bbs.example.com

i referred domain name knowledge on wikipedia, , have read through page, still don't know second-level domain name? page says com tld (top level domain), , tlds highest level of domain names on internet.

it says. bbs.example.com third-level domain name? told me bbs.example.com second-level domain name. .com tld, not domain name.

which right? thank you.

bbs in bbs.example.com third-level domain name. example in example.com second-level domain name. com top-level domain name. (tld)


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