IP addresses in Internet Protocol (IP) version 4 (IPv4) range from 0.0.0.0 up to 255.255.255.255. The IP address 0.0.0.0 has several special meanings on computer networks. However, it cannot be used as a general purpose device address.
| Channel | Publish Date | Thumbnail & View Count | Actions |
|---|---|---|---|
 | Publish Date not found |  0 Views |
0.0.0.0 vs 127.0.0.1 || Local host || Special IP addresses 2
This IP address is structured like a regular one (it has four places for numbers). However, it is a placeholder address or one used to describe the absence of a normal address – neither public nor private. For example, instead of putting no IP address in the network range of an application, 0.0.0.0 can be used to mean anything from accept all IP addresses or block all IP addresses to the default route.
It is easy to confuse 0.0.0.0 and 127.0.0.1. A four-zero address has several defined uses (described below), while 127.0.0.1 has the specific purpose of allowing a device to send messages to itself.
In short, 0.0.0.0 is a non-routable address that describes an invalid or unknown destination. However, it means something different depending on whether it is viewed on a client device such as a computer or on a server computer.
