Systems, methods, and computer program products involve identifying a first IP block having a first set of IP addresses and a second IP block having a second set of IP addresses, the first set of IP addresses different from the second set of IP addresses. A first expected number of IP reassignments for the first IP block can be determined. A first number of IP reassignments between the first IP block and the second IP block can be identified. The first number of IP reassignments can be compared against the first expected number of IP reassignments. The first IP block and the second IP block can be merged into an IP allocation pool based, at least in part, on the comparison.