Visitor Maps and Who’s Online by Mike Challis is a favorite among WordPress webmasters to display visitors IP addresses and location.
Unfortunately IPV6 addresses are cut off by visitor maps 20 character IPV4 field limit. Doc shows how to mod it’s character length in this tutorial solving the problem.
Visitor Maps and Who’s Online is unfortunately no longer available on the WordPress plugin repository. Mike Challis explains what happened below.
From Mike Challis: I am the original author of Visitor maps. This plugin had a new owner in June 2017 with a WP user profile name “fastsecure”. He attempted to put code in several of his newly acquired WordPress plugins that would connect to a 3rd party server he also owned and place spam ads for payday loans and such in the WP posts.
The new owner did not release any new versions of this plugin. The new owner never added spam code to this plugin like he did to other plugins he acquired. The last version I released was 188.8.131.52 with safe code.