192.168.1.100 is a private IP address. It is the beginning of the default dynamic IP address range for some Linksys home broadband routers. It can also be allocated to any device on the local network.
You can set the IP address of a network device to 192.168.1.100. It can also be used as the default gateway IP address. IP address 192.168.1.100 does not provide better performance and security than any other private address. Most routers use 192.168.1.1 or 192.168.0.1 as their default IP address.
Linksys router uses 192.168.1.100
Most Linksys routers set 192.168.1.1 to their default IP address and then assign an address to other network devices via DHCP. Although 192.168.1.100 is usually the default value for a router, administrators can easily change it to a different address (such as 192.168.1.2).
The Linksys router supports a configuration setting called "start IP address". It defines the first IP address in the pool that DHCP will allocate from it. The first computer, phone, or other WiFi-connected device that connects to a router is usually assigned this address.
If 192.168.1.100 is selected as the starting IP address in the pool, the newly connected device will use the address in that range. Therefore, if 30 devices are allocated, the range is from 192.168.1.100 to 192.168.1.129. In this case, devices in LAN will use 192.168.1.101, 192.168.1.102 and so on.
192.168.1.100 may also be the IP address allocated to the router itself. All connected devices regard it as the default gateway address. In this case, if you need to change the router settings, you must use http://192.168.1.100, then enter the username and password.
Using 192.168.1.100 on private networks
IP address 192.168.1.100 can be used on any private network, whether it is a home network or a commercial network. It can be part of the DHCP pool or set to a static IP address. How to determine whether 192.168.1.100 has been allocated to a network device? Quite simply, you can run the ping command from any other computer in the LAN. The router's console should also display a list of assigned DHCP addresses (some of which may belong to the current offline device).