Clear all formatting between the last cell and the data. 1  Do one of the following: To select all columns to the right of the last column that contains data, click the first column heading, hold down CTRL, and then click the column headings of the columns that you want to select.
Find your IP range by examining your subnet mask. Most likely, if you are using a simple home network, your IP address begins with 192.168.0 and your mask is 255.255.255.0. This mask means that the address range 192.168.0.1 to 192.168.0.255 is available for assignment in your subnet. Show Comments.
ABOUT SUBNET CALCULATOR. The subnet calculator lets you enter a subnet range (CIDR) and see IP address information about that range. It also lists each IP address in the range and automatically does a Reverse IP Lookup for you. You can type your range directly in CIDR notation, or use the optional Mask pull-down: