Visual IPv4 & Cloud Planning

Not another subnet calculator. Check real subnet lists for conflicts, carve a supernet with VLSM, and drag a prefix split until it clicks. Switch it to Azure or AWS and it starts costing what the cloud actually charges: five reserved addresses per subnet, AKS and EKS node scaling, and the managed services that quietly need a delegated subnet of their own. Walk out with copy-ready FortiOS, Cisco IOS, pfSense, Terraform, or Bicep. Everything runs in your browser; share links are opt-in.