PrefixForge: IPv4 Subnet Tools

Plan IPv4 networks with clear CIDR arithmetic and saved local notes. PrefixForge is an offline tool for developers, network learners and anyone organizing an address plan. • Enter an IPv4 host or network with a /0–/32 prefix. See the normalized network, subnet mask, directed broadcast, wildcard mask, address range and host capacity. • Understand /31 point-to-point endpoints and /32 host routes with explicit explanations instead of misleading network/broadcast reservations. • Split a parent network into equal-size child subnets, with up to 256 rows. Inspect each child’s boundaries or share the subnet table as text. • View binary addresses and masks, plus the count of network and host bits. • Check whether an address lies inside a CIDR block. • Classify the input address against common private, shared, link-local, loopback, documentation and other special ranges. • Save named network…