Networking Tools
A small, growing collection of utilities for working with IPs, subnets, and the rest of the stack.
Subnet Calculator
Break down an IPv4 or IPv6 CIDR into network, broadcast, host range, and mask details.
IP Sort
Sort a list of IPv4 and IPv6 addresses or subnets into numeric order.
PSK Generator
Generate a cryptographically random pre-shared key, with NATO phonetic names for every character.
MAC Vendor Lookup
Look up the vendor for a list of MAC addresses or OUIs against the IEEE registry, updated daily.
What's My IP?
See the public IPv4 and IPv6 addresses your connection appears from, with reverse DNS and whois links.