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• 100% OFFLINE — all calculations work without internet • Calculation history with favorites and search • Save networks with custom labels • Copy any result to clipboard with one tap • Dark mode, light mode & Material You dynamic color • Smooth and modern UI
IPv4/IPv6 subnet calculator, VLSM, DNS, ping & more. Offline-first.
🌐 NetG - the most complete networking toolkit for Android. Whether you're a network engineer, sysadmin, DevOps engineer, cybersecurity professional, or IT student — NetG has every tool you need in one fast, beautiful, offline-first app. ━━━━━━━━━━━━━━━━━━ 📡 SUBNET CALCULATOR ━━━━━━━━━━━━━━━━━━ • Full IPv4 subnet calculator • Network address, broadcast, first & last host • Subnet mask, wildcard mask, CIDR notation • Binary representation with octet breakdown • IP class detection (A/B/C/D/E) • Private vs public detection ━━━━━━━━━━━━━━━━━━ 🧮 ADVANCED TOOLS ━━━━━━━━━━━━━━━━━━ • VLSM Calculator — variable-length subnet masking • IPv6 Calculator — full 128-bit subnet support • IP Converter — decimal, binary, hex • Subnet Calculator ━━━━━━━━━━━━━━━━━━ 🔧 NETWORK UTILITIES ━━━━━━━━━━━━━━━━━━ • Ping Tool — TCP-based reachability with RTT stats • DNS Lookup — A, AAAA, MX, NS, TXT, CNAME, SOA via DNS-over-HTTPS • Port Scanner — check open TCP ports (advanced) • IP Geolocation — country, ISP, ASN, coordinates • WiFi Info — local IP, gateway, DNS, signal ━━━━━━━━━━━━━━━━━━ 👨💻 DEVELOPER TOOLS ━━━━━━━━━━━━━━━━━━ • Base64 encode/decode • Hash generator: MD5, SHA-1, SHA-256, SHA-512 • JWT decoder — inspect token claims instantly • JSON formatter and prettifier ━━━━━━━━━━━━━━━━━━ 🎓 LEARN SUBNETTING ━━━━━━━━━━━━━━━━━━ • 7 in-depth lessons with examples and tips • IPv4, IPv6, VLSM, routing, network design • 22-question quiz with Easy, Medium & Hard modes • Explanations for every answer • Perfect for CCNA, CompTIA Network+ exam prep ━━━━━━━━━━━━━━━━━━ ✨ APP FEATURES ━━━━━━━━━━━━━━━━━━ • 100% OFFLINE — all calculations work without internet • Calculation history with favorites and search • Save networks with custom labels • Copy any result to clipboard with one tap • Dark mode, light mode & Material You dynamic color • Material Design 3 — smooth and modern UI Built by engineers, for engineers. --- PERMISSIONS --- INTERNET: required for ping, DNS lookup, IP geolocation, and ads. WIFI STATE: used to display local network info. No location, camera, or storage permissions.