SubnetCalc: IPv4 & IPv6

⚡ Master Your Network Infrastructure with SubnetCalc! 🌐 SubnetCalc: IPv4 & IPv6 is the ultimate high-performance technical tool designed for Network Engineers, Systems Administrators, and students preparing for CCNA, CCNP, or CompTIA Network+ certifications. 💻 Stop struggling with manual math and start visualizing your network architecture in real-time. Whether you are designing complex enterprise segments or learning the fundamentals of binary logic, SubnetCalc provides a sleek, professional, and mobile-first experience. Key Features: 🔹 Smart IP Detection (Private vs. Public) 🏠🌐 Choose between detecting your Internal Private IP (LAN) or your External Public IP (WAN). Instantly see if any address is Private, Public, Loopback, APIPA, Multicast, or Reserved. 🔹 ⭐ Favorites Save any calculated subnet with one tap and jump straight back to it later — perfect for recurring projects, homework, or exam prep. 🔹 Advanced VLSM & FLSM Engine ⚙️ Calculate Variable Length Subnet Masking (VLSM) based on specific host requirements, with custom labels for each subnet (e.g. "Sales: 50 hosts"). Every subnet shows its wildcard mask and usable host count at a glance. Instantly search and filter long subnet lists by network, range, or label. 🔹 Interactive Binary Visualizer 🔢 Touch and toggle individual bits to see how IP addresses and masks change instantly. View any address in Decimal or Hexadecimal notation. 🔹 Multi-Vendor CLI Config Generator ⌨️ Automatically generate ready-to-paste configuration commands for interface addressing and static routes — Cisco IOS included free, with Mikrotik RouterOS and Juniper Junos available in Pro. 🔹 Professional Export: CSV & PDF 📄 Export your subnet tables to CSV for free, or generate a polished, presentation-ready PDF network design document with Pro — perfect for handing off to clients, teammates, or professors. 🔹 IPv6 Mastery ☁️ Full support for IPv6 expansion, compression, and EUI-64 generation. Instantly identify address types (Link-Local, Multicast, Unique Local, etc.), and generate RFC 4193-compliant ULA prefixes for private IPv6 addressing in one tap. 🔹 Network Lookup Tools 🔍 Resolve any domain to its IP address with built-in DNS lookup. With Pro, unlock IP geolocation (country, city, ISP) and WHOIS domain lookup (registration date, expiration, nameservers). 🔹 Gamified Practice Mode 🎓 Sharpen your subnetting speed with our interactive quiz! Solve broadcast addresses, network ranges, and masks to earn XP. Perfect for exam preparation! 🔹 Professional Toolbox 🧰 Supernetting: Calculate summary routes for multiple networks. Wildcard Converter: Instantly switch between Wildcard masks and CIDR prefixes. Cheat Sheet: A quick-reference CIDR table for hosts, masks, and efficiency. Cisco Command Reference: A searchable library of essential IOS commands with syntax and examples. 🔹 Modern & Secure Design 🛡️ Privacy First: All processing happens locally on your device — no accounts, no servers. Haptic Feedback: Professional feel with every touch. Dark Mode: A beautiful interface easy on the eyes during late-night troubleshooting. ⭐ SubnetCalc Pro Unlock unlimited subnets and favorites, PDF export, Mikrotik & Juniper CLI generation, IP geolocation, WHOIS lookup, and an ad-free experience with a single one-time purchase — no subscriptions, ever. Designed by network pros for network pros. Whether you are in the data center or the classroom, SubnetCalc is the only networking tool you will ever need. 🚀📡