Thread:Project:Support desk/Permission to create a account just for ONE specific IP address

Hello, I'm searching for an extension with which I can't block definided IP addresses, but WHITELIST just ONE specific IP adress (164.61.13.24). It's beacause the mediawiki I create is just for the employees of my company. And they all use the same IP addresse: 164.61.13.24. And I want to offer the possibility to create an account just for visitors with this IP address. The wiki is not installed of my own server but on a server of a normal webhoster. And you reach the wiki via a normal http://www. address. Do you know an extension to solve this? Thank you very much Tom