Question: What is 192.168.0.1 IP address?
192.168.0.1 is a gateway IP address after you have enabled Internet Connection Sharing to share Internet connection. Check this Internet Connection Sharing tutorial to get more info.
It is also common factory default IP address for router, access point or other network devices which are manufactured by Dlink manufacturer. You can access the router management page by pointing to this IP by using web browser.
The other common IP address used on Dlink network devices is 192.168.0.50, so please read the router manual to confirm the default router IP address and also learn more about router configuration if you need more helps.
In addition, you could also check this wireless router or wired network router configuration article if you have configuration problem.
It's also part of 192.168.0.0/16 network, Class C private IP address block that is commonly used to set up private home network.