Tools

Practical utilities for network engineers and IT work. More tools will be added over time.

Available tools

IPv4 Subnet Calculator Network, broadcast, host range, mask, and binary breakdown from CIDR or dotted mask.
What's My IP Detect your public IPv4 and IPv6 addresses as seen from the internet.
WHOIS Lookup Domain and IP WHOIS — registration dates, nameservers, network range, and contacts.