I was wondering if anyone could tell me why my IP Address is Class A - 10.0.0.25, but my Subnet Mask is Class C - 255.255.255.0 ? I tried to release this IP Address through Command Line but when I renew I get the exact same one. I've had the same service provider for 5 years now and haven't noticed until now, I have DSL through Verizon. I have a Modem and Router but both are set for Dynamic IP Addressing and they both look to have 192 IP Addresses, so I have no idea where my computer is getting that number. Could this also have something to do with the reason why my computer seems slow at times ? I should have speeds near 700 KB/Sec but I barely reach 100, that's not only what I'm paying for but when I do speed tests online they give me roughly the same number. I just bought a new computer with Windows 7 so I know it's not the hardware.