The external IP address of your WordPress site can be found in your MyKinsta dashboard under your sites “Info” tab. This is the IP address that other servers see when your site connects to another server. For example, if your site connects to a third-party payment processor like PayPal, you might need to provide PayPal with the external IP address so that they can whitelist the IP on their end.
The external IP address is different from your IPv4 address. The IPv4 Address is the IP address that your domain should be pointed to.
External IP Address