Connect to mysql from outside of AWS

Hello
I want to connect to DB from outside of AWS i am able to do it by setting up ip range or specific ip or all ip is there an option to allow for specific domain not per IP?
for example if my backed is on cloud run or app engine and i want to query db on aws i can't set specific ip since these features dose not have specific ip this why i need allow connection for domain
Thx

Edited by: Iliya24 on May 27, 2020 4:29 AM