This modification allows you to activate 1 registration per ip for your dolphin site. So only 1 registration from an IP will be accepted. You can also disable this.

You can view the members who has registered from same IP form the admin panel. You can delete them, Ban them, Set them to approval etc.

Features:

1) Shows members from same IP.
2) Shows member IPs used for registration.
3) Block Registration more than one registration from an IP.

Visit http://www.expertzzz.com/Downloadz/view/5243