Understanding 192.168.0.2 and 192.168.0.3 IP Addresses

192.168.0.2 is the second IP address in the range 192.168.0.1 - 192.168.0.255, while 192.168.0.3 is the third address in that same range. Some home networks with D-Link or Netgear broadband routers use this address range. A router can assign 192.168.0.2 or 192.168.0.3 to any device on the local network automatically, or an administrator can do it manually.

These are both private IP addresses, meaning that they can be accessed only from within a private network; you cannot access these addresses from the broader internet.

For this reason, they do not need to be unique — unlike public IP addresses which must be unique across the entire internet.

Why Are These Addresses So Common?

Both these addresses are commonly used on private networks, probably because so many routers are configured with 192.168.01 as their default address. For example, a router with a default address of 192.168.01 (all Belkin routers, for example) will typically assign the next available address to the devices in its network. If your laptop is the first device that connects to your home network, then it will likely receive an IP address of 192.168.0.2. If your tablet is the next device, your router will likely assign it to 192.168.0.3, and so on. Of course, this is not guaranteed, but it is highly likely.

Automatic Assignment of 192.168.0.2 and 192.168.0.3

When a router automatically assigns IP addresses, such as discussed above, this is called dynamic assignment performed via  DHCP.

The router has a pool of addresses from which it can choose — a router with an IP of 192.168.0.1 can assign any devices in its network to an address in the range of 192.168.0.1 to 192.168.0.255. Usually, there is no reason to try to change this dynamic assignment, but if a conflict arises in IP assignment, you can access the router's administrative console and explicitly assign a device on your network an IP address.

Accessing Your Router 

All routers are accessible via a web interface that provides a way to customize router settings. This is called its "administrative console" in most cases. If your router has an IP of 192.168.0.2 or 192.168.0.3, simply enter this into your browser's URL address bar:

http://192.168.0.2 or http://192.168.0.3

Your router will launch its administrative console and request a username/password combination. Most routers ship with a default username of "admin" or none. Frequently, default passwords are "user", "password", "1234" or none. 

Once the console is open, you can view all devices in your network and customize their assigned IP addresses, if you wish. Note that usually this is not necessary, and it's best to just go with the router's automatic assignment of IP addresses. In fact, you may never need to access your router's admin console because most routers guide users through router setup using some kind of wizard of web interface.