192.168.100.1 is a private IP address under the IPv4 range which is assigned to the available devices inside a local network, users may mistype as or 192.168.l00.1 which is wrong as the address contains numerals and not any english letter like the small L in the IP 192.168."l"00.1. Routers can also be assigned 192.168.100.1 as the default IP address to access the admin tools.