To me it's kind of like 255. You can't have an IP passed that...or Subnet mask. There are actually only 254 useable though, because 255 is 11111111 in binary, and is not useable, and 0 is of course the other value, and is also not useable....Ok, I know what I'm talking about here but I just crawled out of bed and I'm still waking up, anyone want to clarify this better untill I'm awake?