The pro version of IP Login gives you the ability to use multiple IP addresses per key.
You can enter a list of IP addresses by simply separating them with a comma.
So if you want to use the key for IP addresses 110.120.130.1
and 110.120.130.10
you simply enter:
110.120.130.1,110.120.130.10
You can also mix IP adresses and IP Ranges:
10.20.30.1,110.120.130.*,210.220.230.50-210.220.230.100