How to connect to a server whose ip needs to be obtained somewhere ... there?

Question

Computer networks

I have a client that, every time it is turned on, must go somewhere to get the address. Then it connects with a socket to the received address, and exchanges a message.
Question: How to make it so that you can get somewhere stored ip and port to connect, while the code does not contain any "login, password" to connect ... for example, to a server db. Are there services that allow you to do this?

?Why do you need it? Make a static ip, and hammer 5m *** on it.
= :/ if it is possible to do without it, then why spend 5 bel rubles on static.

Answer 1

any dyn dns service solves this problem at once.