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. 🚀📡