Subnetting and creating subnet masks is often outsourced to consultants, but doing it yourself can be both challenging and rewarding. In the IT world, specifically in networking, there aren’t ...

I have an Excel spreadsheet containing IP addresses and subnet masks. I need to derive the subnet of each IP address in the spreadsheet.Example: IP (column A): 10.1.230.84, Subnet Mask (column B ...

Note that you also have to deterimine whether this would be a valid mask for the subnets given. Divide #of networks possible for the subnet (8) into the third octet of the first network (32).