hidemyipvpn

Allows your visitors to see their IP address and location in a beautiful widget, compatible for full page views or sidebar views.
<h3>IP Lookup API</h3>
This plugin uses the IPF1 API at: 
https://api.ipf1.com/
The API is used to return the IP location data such as the country, region, and city location of the requested IP address.
The API does not collect or store any lookup requests and does not require any account or authentication to use the API. 
There is no warranty or guarantees for the accuracy or availably of the IP lookup API. Full documentation for the API is available at: 
https://api.ipf1.com/doc.html
The API terms available here: 
https://api.ipf1.com/terms.html

Free IP Lookup Widget

Allows your visitors to see their IP address and location on your Wordpress site.

samsx

This plugin checks if a visitor is listed on httpBL.abuse.ch. 
httpBl is a DNSBL which can be used to blocks access from IPs which are:
<ul>
<li>Known source of Hacking activities (mostly script kiddies)</li>
<li>Source of Remote File Inclusion attacks (<a href="http://en.wikipedia.org/wiki/Remote_File_Inclusion" title="Information about RFI on wikipedia" rel="nofollow ugc">RFI</a>)</li>
<li>Hijacked webserver</li>
<li>Scanning drones</li>
<li>Source of referer Spam</li>
</ul>
For more information take a look at the <a href="http://dnsbl.abuse.ch/faq.php#about_httpbl" title="httpBL.abuse.ch FAQ" rel="nofollow ugc">FAQ</a>.

abuse.ch httpBL check

This plugin checks if a visitor is listed on httpBL.abuse.ch.

Free IP Lookup Widget vs abuse.ch httpBL check