I am gathering a list of all the IP's of each computer here at work. Instead of walking to each one, I ran NetScan to save some time. I got what I needed, but something caught my eye. If there was nothing using an IP, the Hostname field came up with a "?". The "Responding IP" came up with "N/R". Well, one Hostname came up with the "?" but, there was an IP. How can I figure out what this IP belongs to? I did later on, go to each and every computer. Could it be a printer? Maybe it's the router? I know it's not the server. Thanks for any help.