192.168.0.0 is a private IPv4 address. It’s the first address in the block of private addresses within class C and it represents the network (subnetwork) address. This address is not assigned to routers or other devices on a home network or any local area network because it’s reserved for special purposes. In every home network, you have two reserved addresses – the first one (called network address) and the last one (broadcast IP address). One more address is reserved for your router (default gateway IP) and it won’t be assigned to any other device connected to your network.
The size of the 192.168.0.0 subnetwork
When talking about the size of the 192.168.0.0 network (or subnetwork) we are actually talking about the number of available IP addresses inside the network that can be assigned to different hosts. The size of the network depends on the subnet mask.
Most home networks use 18.104.22.168 subnetwork IP address with 255.255.255.0 subnet mask (or in CIDR notation 192.168.0.0/24). In this case, 192.168.0.0 is the subnet IP address and 192.168.0.255 is the broadcast address. One address (usually 192.168.0.1 but it can also be 192.168.0.254 or any other address within this range) is assigned to your router and it’s called default gateway address. All the other addresses within the range 192.168.0.1-192.168.0.254 can be assigned to devices connected to the home network. So, if 192.168.0.0 is the subnet IP and 255.255.255.0 is the subnet mask, there are 254 possible host IP addresses which means that you can connect up to 254 devices to your home network (theoretically).
If you change the subnet mask, you can get a much smaller network or much larger network. It all depends on the number of host IP addresses that you need. So, for example, if the subnet mask is 255.255.255.252 (CIDR notation – 192.168.0.0/30), 192.168.0.0 will be your subnet address, 192.168.0.3 will be your broadcast address and there will be only two addresses that can be assigned to host devices (192.168.0.1 and 192.168.0.2).
On the other side, you can make much larger network by using subnet masks 255.255.254.0 (510 possible host IP addresses), 255.255.252.0 (1022 possible host IP addresses), 255.255.248.0 (2046 possible host IP addresses), 255.255.240.0 (4094 possible host IP addresses), 255.255.224.0 (8190 possible host IP addresses), 255.255.192.0 (16382 possible host IP addresses), 255.255.128.0 (32766 possible host IP addresses), or 255.255.0.0 (65534 possible host IP addresses).
If the subnet mask is 255.255.0.0 (CIDR notation – 192.168.0.0/16), 192.168.0.0 is your subnet address, 192.168.255.255 is the broadcast address, and all the addresses within the range 192.168.0.1 to 192.168.255.254 are available IP addresses, which means that you have 65534 IP addresses at your disposal.
To summarize, the smallest number of available host IP addresses in the 192.168.0.0 subnetwork is 2 (192.168.0.0 subnet address with 255.255.255.252 subnet mask or, in CIDR notation – 192.168.0.0/30) and the largest number of available host IP addresses is 65,534 (192.168.0.0 subnet address with 255.255.0.0 subnet mask or, in CIDR notation – 192.168.0.0/16).
The thing you should remember is that most home networks have 192.168.0.0 subnet address with 255.255.255.0 subnet mask (192.168.0.0/24) which means that you have 254 addresses at your disposal. You should also know that this is not a rule. Your subnetwork address can also be 192.168.1.0 (with a subnet mask 255.255.255.0) or some other. 192.168.0.0/24 is just the most common network IP address in home networks.
Can 192.168.0.0 be assigned to your router or any other device?
No. 192.168.0.0 can never be assigned to your router (it can’t be your default gateway) and your DHCP server (router) will never assign it automatically to any other device connected to your home network. You can try to assign it manually to your computer or some other device but that will cause a bunch of problems – you won’t be able to access the internet and other devices using the same network won’t be able to access your device. So, don’t do it.
Whatever the subnet mask is, 192.168.0.0 is the network (subnetwork) address and it can’t be assigned to routers or devices connected to your home network.
Hello, I am Anthony Stuart…
I am writer and editor at RouterInstructions. I’ve been working as a network specialist for various employers for almost 15 years. In my lifetime, I have installed thousands of routers, modems, bridges, switches, etc. My job also includes designing, monitoring, and maintaining local area networks (LANs) as well as wide area networks (WANs). I want to share my knowledge and experience with you and help you understand the basics of IP addressing. I am also going to write about routers, network security, and other network-related topics.