IP Address Info and Classifier
Paste an IPv4 or IPv6 address to classify it and convert it. See the class, the 32-bit integer, hex and binary forms, and whether the address is private, loopback, link-local, reserved or public.
How to inspect an IP address
- Paste an IPv4 address like 192.168.1.1 or an IPv6 address like 2001:db8::1.
- Read the version, class and integer, hex and binary forms that update as you type.
- Check the flags to see if the address is private, loopback, link-local, reserved or public.
Examples
A private IPv4 address
192.168.1.1
version 4, class C, private, integer 3232235777
An expanded IPv6 address
2001:db8::1
2001:0db8:0000:0000:0000:0000:0000:0001
Frequently asked questions
What is the difference between a private and a public IP?
Private addresses come from the RFC 1918 ranges (10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16) and are only routable inside a local network. A public address is globally routable on the internet. This tool flags which one you have.
How is the IP class determined?
The classful class A to E is read from the first octet: 0 to 127 is class A, 128 to 191 is class B, 192 to 223 is class C, 224 to 239 is class D (multicast) and 240 and up is class E (reserved). Modern routing uses CIDR, but the class is still a useful label.
What does the integer form of an IPv4 address mean?
Each of the four octets is one byte of a single 32-bit number, so 192.168.1.1 becomes 3232235777. Databases and load balancers often store IPs as this unsigned integer because comparisons and range checks are faster.
What does it mean when an IPv6 address is normalized?
IPv6 allows shorthand like 2001:db8::1, where :: stands in for one or more groups of zeros. The normalized form expands every group to four hex digits so you can compare two addresses exactly, and the compressed form is the shortest canonical version.
Is the IP address I paste sent anywhere?
No. All parsing and classification happens locally in your browser, so the address you paste never leaves your device and nothing is uploaded.
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