192.168.1.100 is the beginning of the default dynamic IP address range for some Linksys home broadband routers. It is a private IP address that can be also assigned to any device on a local network configured to use this address range.
Working with 192.168.1.100 on Linksys Routers
Many Linksys routers set 192.168.1.1 as their default local address, then define a range (pool) of IP addresses made available to client devices dynamically via DHCP.
Home network administrators can view and update these settings through the router console.
Some Linksys router consoles support a configuration setting called “Starting IP Address” that defines which IP address is the first one in the pool that DHCP will allocate from. The first computer (or another device) a person connects to one of these routers will typically be assigned this address. While 192.168.1.100 is often the default for this setting, administrators are free to change it to a different address, like 192.168.1.2 for example.
Even if 192.168.1.100 is not chosen as the start address, it can still belong to the DHCP address pool. Linksys routers allow administrators to specify the size of pool and another setting called a subnet mask that together determine the range of addresses allowed on the local network.
Working with 192.168.1.100 on Private Networks
Any private network, whether a home or business network, can use 192.168.1.100 no matter the type of router involved.
It can be part of a DHCP pool or set as a static IP address, The device assigned 192.168.1.100 can change when a network uses DHCP but does not change when using static addressing.
Run a ping test from any other computer on the network to determine whether 192.168.1.100 is assigned to a device currently connected.
A router’s console also displays the list of DHCP addresses it has assigned (some of which may belong to devices currently offline).
192.168.1.100 is a private IPv4 network address meaning that ping tests or any other connection from the Internet or other outside networks cannot be made directly. Traffic for these devices passes through the router and must be initiated by the local device. A network client does not gain improved performance or better security from having 192.168.1.100 as their address compared to any other private address.
Issues with 192.168.1.100
Administrators should avoid manually assigning this address to any device when it belongs to a router’s DHCP address range. Otherwise, IP address conflicts can result as the router can assign this address to a different device than the one already using it.