IP address lookup and information tool

Here you can find all lookup results for loopback IP address which is located in, a reserved range for loopback addresses to the local host (RFC 6890).

IP address is registered as a loopback interface address which is also known as localhost or local host. In computer networking, localhost is a hostname that means this computer. It is used to access the network services that are running on the host via its loopback network interface. Using the loopback interface bypasses any local network interface hardware.
This type of address is also used as a means to validate that a locally connected physical networking card is working as expected and the TCP/IP stack is installed.

The local loopback mechanism is useful for testing software during development, independently of any networking configurations. For example, if a computer has been configured to provide a website, directing a locally running web browser to http://localhost or may display its home page.

Technical details

IP address127.0.0.3
Address typeLoopback
Protocol versionIPv4
Network classClass A
Conversions2130706435 (decimal / iplong)
7f000003 (hex / base 16)
Reverse DNS3.0.0.127.in-addr.arpa
CIDR block127.0.0.0/8

Location details

We can't pinpoint the location of this IP address because it is a loopback IP address which isn't accessible from the internet.

Websites hosted on this IP address

  • There are no websites found hosted on this loopback IP address