Scott Reilly

This plugin records the IP address of the original post author when a post first gets created.
The admin listing of posts is amended with a new “Author IP” column that shows the IP address of the author who first saved the post.
The plugin is unable to provide IP address information for posts that were created prior to the use of this plugin.
Links: <a href="https://coffee2code.com/wp-plugins/post-author-ip/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/post-author-ip/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/post-author-ip/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>
<h3>Hooks</h3>
The plugin is further customizable via four filters. Typically, code making use of filters should ideally be put into a mu-plugin or site-specific plugin (which is beyond the scope of this readme to explain).
c2c_show_post_author_ip_column (filter)
The ‘c2c_show_post_author_ip_column’ filter allows you to determine if the post author IP column should appear in the admin post listing table. Your hooking function can be sent 1 argument:
Argument :
<ul>
<li>$show_column (bool) Should the column be shown? Default true.</li>
</ul>
Example:
<pre><code>/**
 * Don't show the post author IP column except to admins.
 *
 * @param bool $show_column Should the column be shown? Default true.
 * @return bool
 */
function post_author_ip_column_admin_only( $show ) {
 if ( ! current_user_can( 'manage_options' ) ) {
 $show = false;
 }
 return $show;
}
add_filter( 'c2c_show_post_author_ip_column', 'post_author_ip_column_admin_only' );
</code></pre>
c2c_get_post_author_ip (filter)
The ‘c2c_get_post_author_ip’ filter allows you to customize the value stored as the post author IP address. Your hooking function can be sent 2 arguments:
Arguments :
<ul>
<li>$ip (string) The post author IP address.</li>
<li>$post_id (int) The post ID.</li>
</ul>
Example:
<pre><code>/**
 * Store all IP addresses from local subnet IP addresses as the same IP address.
 *
 * @param string $ip The post author IP address.
 * @param int $post_id The post ID.
 * @return string
 */
function customize_post_author_ip( $ip, $post_id ) {
 if ( 0 === strpos( $ip, '192.168.' ) ) {
 $ip = '192.168.1.1';
 }
 return $ip;
}
add_filter( 'c2c_get_post_author_ip', 'customize_post_author_ip', 10, 2 );
</code></pre>
c2c_get_current_user_ip (filter)
The ‘c2c_get_current_user_ip’ filter allows you to customize the current user’s IP address, as used by the plugin. Your hooking function can be sent 1 argument:
Argument :
<ul>
<li>$ip (string) The post author IP address.</li>
</ul>
Example:
<pre><code>/**
 * Overrides localhost IP address.
 *
 * @param string $ip The post author IP address.
 * @param int $post_id The post ID.
 * @return string
 */
function customize_post_author_ip( $ip, $post_id ) {
 if ( 0 === strpos( $ip, '192.168.' ) ) {
 $ip = '192.168.1.1';
 }
 return $ip;
}
add_filter( 'c2c_get_post_author_ip', 'customize_post_author_ip', 10, 2 );
</code></pre>
c2c_post_author_ip_allowed (filter)
The ‘c2c_post_author_ip_allowed’ filter allows you to determine on a per-post basis if the post author IP should be stored. Your hooking function can be sent 3 arguments:
Arguments :
<ul>
<li>$allowed (bool) Can post author IP be saved for post? Default true.</li>
<li>$post_id (int) The post ID.</li>
<li>$ip (string) The post author IP address.</li>
</ul>
Example:
<pre><code>/**
 * Don't bother storing localhost IP addresses.
 *
 * @param bool $allowed Can post author IP be saved for post? Default true.
 * @param int $post_id The post ID.
 * @param string $ip The post author IP address.
 * @return string
 */
function disable_localhost_post_author_ips( $allowed, $post_id, $ip ) {
 if ( $allowed && 0 === strpos( $ip, '192.168.' ) ) {
 $allowed = false;
 }
 return $allowed;
}
add_filter( 'c2c_post_author_ip_allowed', 'disable_localhost_post_author_ips', 10, 3 );
</code></pre>

Post Author IP

Records the IP address of the original post author when a post first gets created.

IP2Location

This plugin will NOT work if any cache plugin is enabled.
This plugin enables user to block unwanted traffic from accessing your frontend (blog pages) or backend (admin area) by countries or proxy servers. It helps to reduce spam and unwanted sign ups easily by preventing unwanted visitors from browsing a particular page or entire website.
Key Features
<ul>
<li>Allow you to block the access from multiple countries.</li>
<li>Allow you to block the access by country grouping, such as EU, APAC, and so on.</li>
<li>Allow you to block the access from anonymous proxies.</li>
<li>Allow you to block the access by IP ranges.</li>
<li>Allow you to whitelist the crawler, for example, Google, Bing, Yandex, and so on, to index your pages (SEO friendly).</li>
<li>Supports IPv4 and IPv6</li>
<li>Default to 403 error (Permission Denied) display</li>
<li>Allow you to customize your own 403 page.</li>
<li>Send you an email notification if some one is trying to access your admin area.</li>
<li>Provide you statistical report of traffics blocked.</li>
</ul>
This plugin supports both IP2Location BIN data and web service for IP geolocation lookup. If you would like to use the IP2Location geolocation BIN data, you can easily download and update the BIN data via the plugin settings page. Alternatively, you can also download and update the BIN data file manually using the below links:
IP Geolocation file download: 
<a href="https://lite.ip2location.com" title="IP2Location LITE database" rel="nofollow ugc">IP2Location & IP2Proxy LITE database (Free)</a> 
<a href="https://ip2location.com" title="IP2Location commercial database" rel="nofollow ugc">IP2Location & IP2Proxy Commercial database (Comprehensive)</a>
To use the IP2Location IP geolocation web service (REST API) for geolocation, you’ll need to register an account at <a href="https://www.ip2location.io" title="IP2Location.io IP Geolocation API" rel="nofollow ugc">IP2Location.io IP Geolocation API</a>. A free plan is available.
<h4>More Information</h4>
Please visit us at <a href="https://www.ip2location.com" title="https://www.ip2location.com" rel="nofollow ugc">https://www.ip2location.com</a>

IP2Location Country Blocker

Plugin does it job, it blocks unwanted countries
Although it misses some functionality:
1. Not possible to set a threshold after which the IP gets blocked forever.
2. The email sent is not very clear from which part of the site it is coming frontend or backend


Great plugin for blocking foreighn countries

Blocks unwanted visitors from accessing your frontend (blog pages) or backend (admin area) by countries or proxy servers.

Post Author IP vs IP2Location Country Blocker