Consider a subnet with prefix 128.130.50.64/26. Give an example of one IP address (of form xxx.xxx.xxx.xxx) that can be assigned to this network. Suppose an ISP owns the block of addresses of this subnet (128.130.50.64/26). Suppose it wants to create four (sub)subnets from this block, with each block having the same number of IP addresses. What are the prefixes (of form a.b.c.d/x) for the four (sub)subnets? (20 points)