What is a two-level domain name?
I heard that the application domain name to two domain names, one is with the WWW, one is not with, and heard that no www is a two-level domain name, do not know is this, there is no three-level domain name, four-level domain name, simply N-class domain name.
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There's no answer to the charging question yet.
You didn't see that, did you? I'm pretty clear about that.
I'm talking about a two-level domain name or a three-tier domain fee.
I said to see the service, there is no international this charge, just see if the DNS service providers, that is, the different home, from free to sky-wide possible
Theoretically ~ should be free, but this also account for server resources, so service providers may also limit, large businesses have the ability to add unlimited
If your registrar does not provide multi-level domain names, but can let you modify the specified DNS, you can specify to an additional free or paid DNS service provider there
