- EU-Vietnam Business Network (EVBN)

A public IP address is a unique IP address assigned to your network router by your internet service provider and can be accessed directly over the internet. A private IP address is a unique address that your network router assigns to your device. It is used within a private network to connect securely to other devices.

A public IP address is an address provided that is provided by your internet service provider (ISP) to your network. On the internet, it recognizes your device. The internet is accessed through your router’s public IP address. Public IP addresses are commonly used by publicly accessible enterprises such as websites, DNS, and VPN servers because they can be accessed from anywhere in the world. You can not go online without having your public IP address, which identifies your device on the internet. Your router is an intermediate between your computer and the internet on a typical home network.

A private IP address, also known as the local IP address, is the IP address your network router allocates to your device. This address is only visible within your network, so it is unavailable on the internet. Each device on the same network is assigned a unique private IP address that allows them to communicate with other devices. The device in your home can have the same private IP address as your neighbors’ device or anyone else’s all over the world, with private IP addresses. This is due to the non-routable nature of private addresses.

You can determine if an IP address is public or private by analyzing and comparing its range to predetermined public and private IP address ranges. A private IP address usually begins with 192, 172, or 10, but this isn’t the only aspect to consider; public IP addresses might also begin with 172 or 192.

Public and Private IP Address Ranges

Private IP Address Ranges

Private networks can use several IP address ranges assigned by the Internet Assigned Numbers Authority (IANA). These reserved IP address ranges are used by millions of private networks around the world.
Private networks should utilize the following address ranges:

Class A-
10.0.0.0

to

10.255.255.255
Class B-
172.16.0.0

to

172.31.255.255
Class C-
192.168.0.0

to

192.168.255.255

As a result, an IP address that falls between these ranges is considered non-routable because it is not unique. Any private network that requires IP addresses for internal purposes can use any address in these ranges without consulting IANA. Within this private address space, addresses are only unique within a particular private network.
The private IP address ranges aren’t that large, as you can see. However, because private IP address ranges can be reused in local networks, they do not need to be large, as local networks are entirely self-contained.

Public Address Ranges

All addresses outside private IP address ranges are considered public. But all the IP addresses that fall into one of the following predefined public IP address ranges are definitely public IP addresses. Public IP addresses are significantly more common than private IP addresses, and the public IP address ranges are: