192.168.1.4 is a private IPV4 address from the block of private addresses within Class C (all the addresses within the range 192.168.0.0 to 192.168.255.255 belong to this block). This specific address is often assigned to one of the devices using your home wireless network. So, if your router’s default gateway is 192.168.1.1, this address may be assigned to one of your devices (automatically or manually).
192.168.1.4 as a Dynamic IP Address
If you are using the default router settings (if you don’t make any reservations in DHCP pool), this address can be automatically assigned to some of your devices (computer, phone, or any other device on the network). So, if your router’s default gateway is 192.168.1.1 the DHCP pool of available addresses will include all the addresses within 192.168.1.2 – 192.168.1.254 range. DHCP server (your router or modem) assigns one of the available IP addresses to each device that gets connected to the same network (sometimes sequentially but not always). Since 192.168.1.4 is within the range of available addresses, it can be assigned automatically by the DHCP server to your device when it gets connected to your home network. This IP address is not assigned to your device permanently but you get to use it for a certain period of time (lease time). After the lease time expires, the DHCP server will check if you are still online. If you are, the server will renew the lease but if you disconnect from the network, this IP address gets back to the DHCP pool and it can be assigned to some other device. So, when you connect your device again, you may get some other IP address. That’s why it’s called dynamic IP address.
192.168.1.4 as a Static IP Address
If you want, you can assign 192.168.1.4 IP address manually to your computer or any other device using your home network. That way, the IP address will be assigned to that specific device every time it gets connected to your home network. That kind of IP address is called static IP address and it will be excluded from the DHCP pool (it will be reserved and it won’t be assigned to other devices). In order to set 192.168.1.4 as a static IP address, you can make some changes in TCP/IPV4 Properties tab or make a reservation in DHCP pool.
IP Conflict Issue
If you try to assign 192.168.1.4 to your device manually and if it’s already assigned to some other device connected to the same network, you will experience an issue called IP conflict. Each device connected to a home network must have a unique IP address in order to communicate with other devices and to get access to the internet. If two of them have the same IP address, they won’t be able to do those things. In order to resolve this issue, you have to disconnect both devices, assign the desired IP address manually to your computer, connect it to your home network, and then connect the other device to the same network. 192.168.1.4 will be reserved and some other IP address (the next available address from the DHCP pool) will be assigned to the other device.