Accept Admin from certain IP's only-help

I set up IP access to the admin for certain addresses and forgot that one of the IP’s was dynamic. Stupid me! Does anyone now how to add an IP for admin access to the PHPmyadmin database. I looked around and only found the blocking addresses or at least it seems that way.

Maybe it has a different name structure?

I cant get to the other office for a few days and need access to the cart.

Any help would be great.