IPV4 cho phép bạn xem thông tin về bất kỳ địa chỉ CIDR được.
IPV4 allow you to enter a Classless Inter-Domain Routing address and see information about that IP address such as the network address, the broadcast address, or the range of usable IP addresses for that network address. IPV4 VLSM is a useful tool for service providers and network operator who frequently allocate and work with subnets.