terry(_at_)ashtonwoodshomes(_dot_)com wrote:
Interesting
As I just checked numerous Domain name registrars, including NetworkSolutions,
and non accept _ as a
domain name character.
Can you give an example of a domain name that has an underscore in it? (Not
that proof by example
is valid, just curious to test my DNS servers against it to see what happens.)
Perhaps you're misunderstanding.
In this context, "domain name" means "name in a domain". Domain names as sold
by registrars are intended to have host names "within" the domain. Since host
names cannot have underscore characters *anywhere* in them, domain names as
sold by registrars don't have underscores in them.
What *can* have an underscore is a name within a domain, where that name does
not have an A/AAAA record, i.e. is not a hostname.
So you can't have my_example.com (registrar won't allow it, as the owner would
want www.my_example.com), but you can have _my.example.com as long as there is
no A/AAAA etc. record for _my.example.com or any of its subdomains.
At least that's *my* understanding.
Paul.