Set up Wireguard on my ASUS RT-AX88U 388.1 ... what DNS Servers are being used?

[Skeptical.me]

A bit of a Noob question, sorry ... I set up a Wireguard client (first time) using a Proton VPN Wireguard .conf file. I'm connected but when I do a DNS leak test on ipleak.net and https://www.expressvpn.com/dns-leak-test I don't see what DNS servers the connection is using, how do I know what DNS servers are being used?

 

[jtp10181]

Try this site: https://browserleaks.com/ip
Also, by default Proton VPN will use its own DNS server that is local to the VPN server you connect to.