When trying to whitelist an IP address you might get the following error message:
This means the IP address you are trying to whitelist is either a local IP address (10.0.0.0/8, 172.16.0.0/12 or 192.168.0.0/16) OR was typed incorrectly.
You can only whitelist public IPv4 or IPv6 addresses. To get your public IP address, visit websites such as ifconfig.me or ipecho.net.
Read the Whitelist an IP address article to discover all possible ways to whitelist an IP address or range.