How to configure RU Center DNS to work with Heroku through the root domain?

Question

Domain Name System

There is an app on Heroku .
There is a domain purchased from Ru Center .
You need to configure Ru Center DNS so that requests to mydomen.com go to myapp.herokuapp.com .
Tried:
- Make an entry in the resource file like [ www IN CNAME myapp.herokuapp.com. ]. Only www.mydomen.com works . An entry like [ @ IN CNAME myapp.herokuapp.com. ] or [mydomain.com. IN CNAME myapp.herokuapp.com. ] do not do .
- Set up a redirect from mydomen.com to myapp.herokuapp.com . Works but doesn't save my domain in the address bar.
- Set up a redirect from mydomen.com to www.mydomen.com , and in the resource file make an entry like [ www IN CNAME myapp.herokuapp.com. ]. The redirect to www.mydomen.com works , after which it gives an error page from the DNS provider "Redirection for this domain is not configured".

Answer 1

As Aleksey wrote in a comment , the solution is as follows:
1) Create an entry like [ @ IN A 174.129.25.170 ]
in the resource file 2) Create an entry like [ www IN CNAME myapp.herokuapp.com. ]
Free www to @ redirect service (IP taken from it): wwwizer.com/naked-domain-redirect