Creating ur 3 domain in IIS8, is it possible?

Question

IIS

Hello everyone!
Faced with a global transfer of the site from the hoster to my server. There was a small problem: It is
given: the Server with IIS8 on it the domain of 2 levels (site.com). The registrar has registered DNS of zone A for the 2nd level domain (site.com) and zones A and CHNAME for 3rd level domains. (a.site.com, b.site.com, c.site.com) - all to one IP (for example, 111.222.333.444). IIS has all these sites (site.com, a.site.com, b.site.com, c.site.com). But only site.com works with an external request. I know that it is possible to breed by ports, but this is not an option in the slightest.
That's the question, how to make all domains 3 ur available from the outside?

Answer 1

And in bindings, the node name is written for sites 3 ur. ?

Answer 2

Site.Bindings, BindingElement.BindingInformation - that's just the point, yes))