The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.
One of a set of tools we're offering as a way of saying thank you for being a part of the community.
1. new client is not in the same domain with the others.
2. new client's account is not password protected.
not sure if this might help but that's what I can think of from a quick view..