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Free IP Tools – IP Address Lookup & More

Our IP Tools provide calculators and real-time lookups to assist you with your day-to-day system administration and research tasks. Whether you are looking for a decimal IP calculator, ASN information, CIDR/netmask reference data, or want to simply know what your IP is, we can offer all of the these IP tools for free, and IP geo-location lookup

What is an IP address? An Internet Protocol address (IP address) is a number assigned to any machine that has a computer network and that uses the internet protocol for communicating. Simply said: any computer that wishes to talk to another computer using the Internet protocol must have an IP address unique to the network it's on.

An Internet Protocol address (IP address) is a number assigned to any device attached to network and that uses the internet protocol (IP) for communications. To communicate with each other, devices that include smart phones, tablets, laptops, sensors, and IoT objects, must have an IP address unique to the network it is on. Neustar IP Tools provide calculators and real-time lookups to assist you with your day-to-day system administration and research tasks. Whether you want to simply know what your IP address is or are looking for a decimal IP calculator, ASN information, CIDR/netmask reference data, or a Geo-location lookup, these tools can help.