Professional utilities to work with IP addresses, CIDR notation, and DNS lookups
Convert IPv4/IPv6 addresses to integers and back
Convert CIDR notation to IPv4 ranges and subnet masks
Convert IPv6 CIDR blocks to network ranges
Convert IP ranges to CIDR notation
Map IPv4 addresses to their IPv6 equivalents
Perform reverse DNS lookups on IP addresses
Resolve domain names to IP addresses via DNS
Convert between octal, decimal, and hex IP formats
Professionally designed utilities for network engineers and developers
All tools run directly in your browser with no data sent to our servers
Your data never leaves your device, keeping your network information private
Our tools are maintained and enhanced with the latest networking standards
Check out our premium IP Geolocation API for additional capabilities
