Network Toolkit
Live calculators for subnetting and conversions, plus DNS and WHOIS. Command generators build copy-paste terminal lines — nothing runs on our servers.
Live calculatorsMath and safe API calls: converters, subnetting, DNS, WHOIS.
Command generatorsLinux, macOS, and Windows examples with Network+ study notes.
🔢
Number system converter
Decimal, binary, hex, and IPv4 octets in binary.
→
🌐
IP Calculator
IPv4/IPv6 subnet math, wildcard mask, and CIDR reference.
→
🔍
DNS & WHOIS
Live DNS lookup and WHOIS — real queries, rate limited.
→
💻
Command generator
Ping, traceroute, and port-scan commands for your terminal.
→
📚
Quick Reference
OSI model, common ports, protocols, and cabling.
→