How to change ip address back to normal?

using a program i changed it,and now i want my original ip adress back



i tried restartin my computer, pluggin out my router butthe changed one stays.How to change ip address back to normal?
Your external IP never changed. (If it had you wouldn't be on the internet.)



Your internal IP is irrelevant - any one that works is as good as any other one that works. But change your connection to automatically get an IP address and you'll be back to default. That doesn't mean that the address will be the same. The router assigns addresses in the order they're asked for. If your computer is the first one turned on, it'll get an address like 192.168.1.2. The next computer turned on will get 192.168.1.3. If you now turn your computer off and another computer gets turned on, it gets 192.168.1.2. Turn your computer back on and you get 192.168.1.4. That's ';normal';. (And all of those computers have the same external IP address - the one your provider assigned to your router when it was turned on.)