Subnets

You will advertise the aggregate /25 at your border router; internally you may subnet your /25 to meet your needs. An example would be to create sixteen /29 segments with six host addresses on each segment. Advertising aggregate addresses at your border routers will lead to increase stability of your network as view at your peering points.

NO. If you devide one number(subnet x) by another(subnet y), you should expect the answer(subnet z) to be equal to or less than the original(x). ex. 128 / 16 = 8

If the range the ISP gives you is limited, then get a firewall where you can implement NAT and map those few IP numbers you have available to servers and workstations that need them.

Your problem is not subnetting but IP Translation.
Follow wwwacny@yahoo.com suggestion. Or put up a Router and configure it as a NAT server.

UMMM - you can subnet the addresses you have, but you won't gain more addresses. You have a Class C subnet and that's all you are allowed to use. Theoretically, someone else out there can use the rest of the Class C subnetted addresses that are possible within the network 203.206.63.0. NAT is the only useful resolution to this problem. If you have only 125 or fewer hosts, you'd be much better off using only one or two public IP addresses and using a NAT router for the rest. It's a great deal more secure, anyway, since NAT effectively "hides" most of your servers and workstations from direct external access by unauthorized users on the Internet. Hope this helps!

All the advice is excellent, but to really help we need specific Network design info. Give a better word picture of what you need to accomplish than we can offer more comprehensive help.

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