192.168.1.100 is the first default dynamic IP address range for some Linksys routers. 192.168.1.100 is a default IP address that is routinely used by router manufacturers such as Linksys, TP-LINK and Netgear. It is an IPv4 address and private IP address which is often used on local area networks.
One person can have one device on the network at the IP address 192.168.1.100 and another person can have a different device on another network at the IP address 192.168.1.100, but neither of them can have two devices on the same network if both use the 192.168.1.1 IP address.
This means the first computer (or other device) you attach to a Linksys router will typically be assigned the address 192.168.1.100 by DHCP.
It is a part of reserved IP range for private uses.
192.168.1.100 IP is not available on internet. If computer with this IP want to connect to internet it must be redirected through a router or another computer.To avoid address conflicts, do not use 192.168.1.100 as a static IP address if it is also part of the router's DHCP range.
If you are part of some LAN or you have built your own LAN with Linksys router your computer can get assigned 192.168.1.100. This address is a private IP address that you can assign manually (statically) to a computer on the local network.