You probably need to look for something like 46.20.114.??? If you look in Manage Website>Website settings>Site Domain the current IP address you are using should be visible; it was for me this morning.
I manage my account through IONOS and it was relatively easy. I just looked for the IP address number (shown in Site Domain) and edited it with the new IP address. It took a couple of hours for the Voice system to update itself.