domain name instead of in-addr.arpa:22222

[999null 0]

https://i.ibb.co/2vyhhb4/image.png

hello, 

Can someone advice me how to show a domain here, instead of airvpn ip.  

I have a domain.com on cloudflare. Any advice appreciated.

(rutorrent window)

[OpenSourcerer 1441]

It's already resolved. .in-addr.arpa and .ip6.arpa domains usually mean there is no reverse DNS entry for a given IP.