NetSubnet Toolkit: VLSM/CIDR

Subnet, VLSM and CIDR tools for networking. Fast IPv4 and IPv6 calculator, accurate and fully offline. NetSubnet Toolkit is an all-in-one networking app for subnetting, IP addressing and network design. Built for network engineers, CCNA/CCNP students and IT professionals who need fast and reliable results anytime, even without internet access. Key Features Subnet Calculator (IPv4) * Calculate network, broadcast, first and last host * CIDR support (/8 to /32) * Wildcard mask and binary format VLSM Calculator * Automatic subnet allocation * Optimized host distribution * No overlaps CIDR / Subnet Mask Converter * Convert prefix, subnet mask and wildcard * Instant results IPv4 and IPv6 Tools * IPv6 network calculations * Address expansion and compression * Advanced prefix handling Subnet Planner * Split networks into multiple subnets * Ideal for network design and architecture IP Range Generator * Generate IP address lists * Perfect for CCTV, VoIP and enterprise networks VLAN Assistant * Quick VLAN calculations * Automatic gateway suggestions Configuration Generator * Ready-to-use network configuration snippets * Cisco-style commands * Export and share easily Smart History * Save recent calculations * Copy results instantly Why choose NetSubnet Toolkit * Professional subnet calculator and networking toolkit * Works 100% offline * Clean, fast and intuitive UI * Accurate results for real-world networking Perfect for * Network engineers * CCNA and CCNP students * IT technicians * Network administrators Design networks faster, avoid subnetting errors and take your networking tools anywhere.