I have a domain registered in Dynadot and have a server running multiple web services on different ports. I want to know if it's possible to create subdomains that point to a specifit IP:Port. Eg:
mydomain.com -> points to IP:80 test.mydomain.com -> points to IP:6895 test2.mydomain.com -> points to IP:7515
Of course it is. But it would have to be done at the server level with a tool like cPanel. I am not sure how it would be accomplished at dynadot, probably the staff would have to do it for you.