I have a website hosted on a shared hosting plan. My domain name is registered at GoDaddy, and the nameservers are those of my shared hosting (so far, all normal).
But I
Yes it is possible. In the GoDaddy Control Panel, edit your DNS Zone File and add a "A record" for the subdomain. You should already have a A record for your main domain mapped to "@". Add a new entry using the subdomain prefix as host, e.g.:
Host Points To
@
sub
The second line should allow you to access the subdomain using sub.mydomain.com
, while the main domain will still be accessible using mydomain.com
.