IP Address Checker
Analyze any IP address instantly. Identify whether it is IPv4 or IPv6, public or private, and its classification — loopback, link-local, multicast, reserved and more.
It is completely free, private and requires no signup.
The prefix tells you how many bits are network vs host.
Network and broadcast addresses are never usable by hosts.
Leave headroom when dividing subnets for future devices.
How it works
Analyze any IP address instantly. Identify whether it is IPv4 or IPv6, public or private, and its classification — loopback, link-local, multicast, reserved and more.
Type an IPv4 or IPv6 address.
See the version, class and whether it is public, private or special.
Examples & Data
| Address | Type |
|---|---|
| 192.168.1.1 | IPv4 Private |
| 8.8.8.8 | IPv4 Public |
| 127.0.0.1 | IPv4 Loopback |
| ::1 | IPv6 Loopback |
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It is completely free, private and requires no signup.
Use the tool nowFrequently Asked Questions
IPv4 uses 32-bit addresses (e.g. 192.168.1.1), while IPv6 uses 128-bit addresses (e.g. 2001:db8::1), vastly expanding the address space.
Ranges like 10.x, 172.16–31.x and 192.168.x used inside local networks, not routable on the public internet.
127.0.0.1 (IPv4) and ::1 (IPv6) refer to the local machine itself.
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