no dns on modem

I have two issues with my service. The first is a question as to why does the wifi/modem use 10.0.0.x for the IP series and not 192.168.0.x which is more common? The second issue is the modem/wifi does not provide local DNS for devices attached. The admin section lists the device names separately but when I make a network request from my workstation, it only returns the IP and not the name of the device. This was not a problem when I had an AT&T system. I use software that is looking for a device on the local network and it has to be derived by IP instead of named. This is frustrating because I have to look at the entire list and find the device IP that wasn't there previously.