Free IP Tools

Professional utilities to work with IP addresses, CIDR notation, and DNS lookups

IP to Integer

Convert IPv4/IPv6 addresses to integers and back

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CIDR To IPv4

Convert CIDR notation to IPv4 ranges and subnet masks

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CIDR To IPv6

Convert IPv6 CIDR blocks to network ranges

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IP Range To CIDR

Convert IP ranges to CIDR notation

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IPv4 to IPv6

Map IPv4 addresses to their IPv6 equivalents

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IP to Hostname

Perform reverse DNS lookups on IP addresses

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Hostname to IP

Resolve domain names to IP addresses via DNS

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IP Converter

Convert between octal, decimal, and hex IP formats

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Why Use Our Tools?

Professionally designed utilities for network engineers and developers

Fast & Reliable

Each tool sends the value you enter to our server and returns the result in seconds

Secure

Only the value you enter is sent, over HTTPS, and no account or API key is needed

Regularly Updated

Our tools are maintained and enhanced with the latest networking standards

Need More Advanced Features?

Check out our premium IP Geolocation API for additional capabilities

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