IP Address Lookup
Inspect public IP addresses, reverse DNS hostnames, and network classifications.
Presets:
About IP address info
This tool shows the details of an IPv4 or IPv6 address: the class, the reverse DNS host name, and whether the address is public, private, loopback, or reserved.
A private address, such as one in 10.0.0.0/8 or 192.168.0.0/16, works inside a network only. A router cannot send it over the internet. This is a common cause of a service that works on a laptop and fails in production.
The reverse DNS name often names the hosting company or the internet provider of the address.