How do I use the IP Calculator tool?
IP Calculator
The IP calculator can be used to calculate IPv4 and IPv6 address details, subnet information and address ranges. It can also include information from the IANA assignment registrations. When you have performed the calculations, you can then save the information for later use.
Although the IP calculator contains options for modifying the results of the calculations, it is worth highlighting the fact that IPv6 calculations can be very large (given the 128bit address space).