Lucas Bonomo

Just show the remote IP of client (with a shortcode [show-remote-ip]) and public an endpoint to show the IP (/wp-json/show-remote-ip/v1/get-ip)

Show Remote IP

Just show the remote IP of client (with a shortcode [show-remote-ip])  and public an endpoint to show the IP (/wp-json/show-remote-ip/v1/get-ip)

Takashi Kitajima

MW IP Denied allows you to set access restrictions by IP address for each article. When access is restricted and there is template-access-denied.php, MW IP Denied load it.
You can also use short code for controlling the access on a part of the article.
Only the IP address that you specify can access. 
[mw-ip-allow allow=”IPAddress,…”]text[/mw-ip-allow]
Only the IP address that you specify can not access. 
[mw-ip-deny deny=”IPAddress,…”]text[/mw-ip-deny]

MW IP Denied

MW IP Denied allows you to set access restrictions by IP address for each article.

Show Remote IP vs MW IP Denied