While in GA it is impossible to create a site profile on the domain ".".
The system does not accept it either in unicode (“domain.rf” - invalid characters in the domain name) or in punycode (“xn - d1acufc.xn - p1ai” is the wrong first-level domain).
In forums, therefore, the most popular advice is to switch to using Yandex. Metrics.
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My advice would be different:
Create a profile in Google Analytics for a non-existing, but valid domain.
Counter code set on your ".rf" site.
In the future, the profile settings can be changed by specifying the correct domain name.
If someone knows about the pitfalls associated with my "hack", comment out, say "thank you".